SF Weekly 3/19 Results & Standings
March 24, 2023 in weekly-singles-results
March 19, 2023
Week 24
TD:Â Adam Hess
Juan Bernal shot the hot round with 46
74 played, 70 paid
Par 60
Prize Purse: $275
Ace Pot: $131
Personal Bests – None
Adjusted, Handicap, Raw Score, Name, Payout
-6.53 | 7.47 | 46 Juan Bernal $63
-6.33 | 5.67 | 48 Travis Callahan $48
-5.92 | -7.92 | 62 Jorge Novoa $37
-5.28 | 4.73 | 50 Luiz Celeste $27
-4.74 | 5.27 | 50 Spencer Churchill $20
-4.73 | 4.28 | 51 Marco Benites $16
-3.62 | 2.39 | 54 Andy Rothschild $13
-3.54 | 3.47 | 53 Edward Bigarani $11
-3.24 | 0.77 | 56 Chris Sherwood $9
-2.80 | 7.20 | 50 Wilson Linker $8
-2.28 | 0.72 | 57 Alex Bruner $7
-2.17 | -8.17 | 66 Tyler Stegall $6
-2.12 | -2.12 | 60 Eugene Kim $5
-1.80 | 7.20 | 51 Brandon Lohmann $5
-1.59 | 4.41 | 54 Dheen Weening
-1.43 | 1.58 | 57 Louie Michaud
-1.34 | 6.66 | 52 Matt Neiman
-1.22 | 3.78 | 55 Sylvain Pelletier
-0.93 | 2.07 | 57 Morgan Womble-Dahl
-0.91 | 0.09 | 59 Matt Duncanson
-0.85 | 8.15 | 51 Simon Crosby
-0.71 | 2.30 | 57 Steven P
-0.68 | -0.68 | 60 Graham Biller
-0.36 | 3.65 | 56 Eric Roth
-0.27 | 4.73 | 55 Chris Johengen
-0.10 | 1.90 | 58 Maxwell Bieber
-0.02 | -7.02 | 67 Fred Herrera
0.19 | 4.19 | 56 Chris Tirrell
0.20 | 2.20 | 58 Andrew stella
0.24 | -0.77 | 61 Jake Ward
0.40 | -3.60 | 64 Geoff Goss
0.67 | 5.67 | 55 Matt Brenner
0.69 | -5.31 | 66 Adam Hess
0.82 | 4.82 | 56 Patrick Wickham
1.13 | 5.13 | 56 Josh Schmidt
1.20 | -1.80 | 63 Dan Gottlieb
1.21 | -2.79 | 64 Tim DeWeerd
1.33 | -5.67 | 67 Gerald Richelson
1.40 | -5.60 | 67 Luke Hammer
1.71 | 1.71 | 60 Marvin Paddock
1.98 | -11.03 | 73 Paris Isom
2.16 | -1.85 | 64 Eric Plett
2.17 | 1.17 | 61 Josh Audibert
2.56 | -1.44 | 64 Gerrad Greenberg
2.60 | -1.40 | 64 Brent Struve
2.72 | -3.29 | 66 Shu Pan
2.82 | 4.82 | 58 Greg Breazeale
2.83 | 7.83 | 55 Danny Kerfeld
3.17 | 6.17 | 57 Trevor Duckworth
3.18 | -3.83 | 67 Adam Storr
3.19 | -0.81 | 64 Alex Georgopoulos
3.24 | 8.24 | 55 Harper Alexander
3.42 | -5.58 | 69 Patrick Nelson
3.46 | -0.54 | 64 Tom Murtiashaw
4.11 | 3.11 | 61 Chris Isom
4.50 | -8.51 | 73 Tj Carskadon
4.53 | -0.47 | 65 Patrick O’Brien
4.54 | -3.47 | 68 Salla Vaerma-Jadlos
4.67 | 5.67 | 59 Kris Mickelson
5.20 | 4.20 | 61 Matthew Hansen
5.24 | -2.76 | 68 Rob Moran
5.53 | -2.48 | 68 Craig Bostwick
5.87 | 3.87 | 62 Rich Korach
5.97 | 7.97 | 58 Denis Flaschner
6.93 | 2.93 | 64 Shawn Mercy
8.91 | -0.09 | 69 Joe Canose
n/a | n/a | 59 Phil Gauthier
n/a | n/a | 62 Chris Doody
n/a | n/a | 65 Allen Wigington
n/a | n/a | 71 Mitchel Cinotti
n/a | -2.63 | DNF Ross Collier
n/a | 6.21 | DNF Sean Jack
n/a | 1.04 | DNF Sam Schwartz
n/a | 7.97 | DNF Marquis Oliver
Winter Standings: Qualifiers
1 -9.79 12 Scott “Bizzle” Badovick
2 -7.81 13 Todd Kurnat
3 -7.75 16 Harper Alexander
4 -7.62 13 Juan Bernal
5 -7.50 16 Simon Crosby
6 -7.26 17 Marquis Oliver
7 -7.04 12 Cory Murrell
8 -6.68 17 Danny Kerfeld
9 -5.63 12 Matt Neiman
10 -5.26 19 Trevor Duckworth
11 -5.23 13 Chase Lawler
12 -5.04 14 Sean Jack
13 -5.03 16 Travis Callahan
14 -4.93 21 Matt Brenner
15 -4.40 15 Luiz Celeste
16 -4.33 21 Greg Breazeale
17 -4.00 17 Spencer Churchill
18 -3.84 16 Josh Schmidt
19 -3.60 20 Derek Phelan
20 -3.57 23 Marco Benites
21 -3.55 21 Sylvain Pelletier
22 -3.53 17 Chris Tirrell
23 -3.24 21 Dheen Weening
24 -2.83 12 Andrew Monbouquette
25 -2.79 14 Andy Hale
26 -2.68 14 Edward Bigarani
27 -2.32 14 Eric Roth
27 -2.32 14 Daniel Charlip-Blumlein
29 -2.14 21 Andy Rothschild
30 -2.03 19 Shawn Mercy
30 -2.03 19 Rich Korach
32 -1.39 14 Eric Leaf
33 -1.06 16 Dave McGrath
34 -0.93 14 Chris Isom
35 -0.92 12 Ben Bell
36 -0.87 15 Steven P
37 -0.79 12 Louie Michaud
38 -0.27 15 Marvin Paddock
39 -0.21 12 Casey Livingood
40 -0.15 13 Mike Hudson
41 0.39 18 Glenn Murray
42 0.42 12 Nate Kindler-Balmy
43 0.42 13 Brian Kelly
44 0.68 17 Chris Sherwood
45 0.69 16 Kevin Smeds
46 1.03 18 Matt Duncanson
47 1.48 21 Joe Canose
48 1.59 16 Jesse Walton
49 1.79 14 Tyler Bonner
50 2.00 12 Joe Ambro
51 2.04 14 Graham Biller
52 2.17 12 Jake Ward
53 2.19 16 Tom Murtiashaw
54 2.50 16 Dave Headd
55 2.67 12 Gerrad Greenberg
56 2.71 14 Eric Plett
57 2.78 18 Alex Georgopoulos
58 4.04 12 Steve Parrott
59 4.93 20 Craig Bostwick
60 4.96 13 Eugene Kim
61 5.31 16 Shu Pan
62 5.80 15 Max McLay
63 6.20 15 Marty Aitken
64 7.82 14 Hugh Harrell
65 7.95 19 Mark Willson
66 8.15 13 Gerald Richelson
67 9.78 18 Fred Herrera
68 10.04 12 Ashley Foust
69 11.39 18 TJ Carskadon
70 11.62 13 Val St Louis
71 13.79 14 Paris Isom
72 13.92 13 Harry Yee
Winter Standings: All
1 -11.50 4 James Proctor
1 -11.50 1 Andy Leaf
3 -9.79 12 Scott “Bizzle” Badovick
4 -8.67 3 Travis James
5 -8.50 1 Jeffrey McCormick
6 -8.00 1 James Thomas
6 -8.00 1 Jake Tisinger
6 -8.00 1 Sean Scruby
9 -7.81 13 Todd Kurnat
10 -7.75 16 Harper Alexander
11 -7.62 13 Juan Bernal
12 -7.60 10 Jesse Kerfeld
13 -7.50 16 Simon Crosby
14 -7.26 17 Marquis Oliver
15 -7.04 12 Cory Murrell
16 -7.00 1 Dylan Lopez
17 -6.82 11 Stick Williams
18 -6.75 4 Owen Hamilton
19 -6.70 5 Wilson Linker
20 -6.68 17 Danny Kerfeld
21 -6.50 8 Denis Flaschner
22 -6.25 4 Troy Campbell
22 -6.25 2 Vince Mardigras
24 -6.09 11 Brandon Lohmann
25 -6.00 1 Gabriel Neustadt
25 -6.00 1 Grant Manley
25 -6.00 1 Jacob Sanders
25 -6.00 2 Aidan Dawn
25 -6.00 1 Griffin Burke
30 -5.75 2 Paul Kinney
31 -5.70 5 Evan Kelly
32 -5.63 12 Matt Neiman
33 -5.55 10 Bob McGarity
34 -5.50 1 Toby Parks
34 -5.50 6 Logan Ritter
36 -5.26 19 Trevor Duckworth
37 -5.25 2 Kevin Davidson
37 -5.25 2 Jared Williams
39 -5.23 13 Chase Lawler
40 -5.04 14 Sean Jack
41 -5.03 16 Travis Callahan
42 -5.00 1 Devon Saucedo
42 -5.00 1 Jesse Miller
42 -5.00 1 Connor Stuart-Paul
42 -5.00 2 Devin Drewry
42 -5.00 1 Jacob Bassetti
42 -5.00 1 Traylor White
42 -5.00 1 Sal Lopez
49 -4.93 21 Matt Brenner
50 -4.70 10 Nathan La Chance
51 -4.68 11 Joe Schultz III
52 -4.56 8 Dylan Cantu
53 -4.50 2 Rob Sindelar
53 -4.50 2 Hunter Faustino
55 -4.40 15 Luiz Celeste
56 -4.33 21 Greg Breazeale
56 -4.33 3 Markham Shofner
58 -4.28 9 Ben Fox
59 -4.07 7 Doug Mitchell
60 -4.00 1 Joe Kestler
60 -4.00 2 Brett Buntjer
60 -4.00 17 Spencer Churchill
60 -4.00 2 Alex Bruner
60 -4.00 2 Colin Sherrod
60 -4.00 1 Daniel Humphreys
60 -4.00 1 Jon Baker
60 -4.00 2 Bill Shea
68 -3.88 8 Filipe Wong
69 -3.84 16 Josh Schmidt
70 -3.75 2 Anthony Jaussaud
70 -3.75 10 Patrick Wickham
72 -3.72 9 Foulad Albadeh
73 -3.67 6 Samuel Christmas
73 -3.67 3 Bryan Schmitz
75 -3.65 10 Ryan Holland
76 -3.60 20 Derek Phelan
77 -3.57 23 Marco Benites
78 -3.55 21 Sylvain Pelletier
79 -3.53 17 Chris Tirrell
80 -3.30 5 Bob Glaser
81 -3.25 2 Evan Walters
81 -3.25 2 Eldridge Manchester
83 -3.24 21 Dheen Weening
84 -3.00 1 Sean Frick
84 -3.00 1 Connor Edel
84 -3.00 4 Mike Coronel
84 -3.00 1 Dennis Warsen
84 -3.00 1 Nick Zwerdling
84 -3.00 7 Chris Johengen
84 -3.00 1 Michael Drewry
91 -2.83 12 Andrew Monbouquette
91 -2.83 3 Nicholas Coon
93 -2.79 14 Andy Hale
94 -2.75 2 Daniel Godin
95 -2.68 14 Edward Bigarani
96 -2.50 3 David Yu
97 -2.43 7 Jack Persons
98 -2.42 6 Colvin Chapman
99 -2.33 3 Dan Santini
100 -2.32 14 Eric Roth
100 -2.32 14 Daniel Charlip-Blumlein
102 -2.25 6 Chris Hart
103 -2.14 21 Andy Rothschild
104 -2.11 9 Matt Stana
105 -2.10 5 Booth Burrows
106 -2.07 7 Luke Walton
107 -2.03 19 Shawn Mercy
107 -2.03 19 Rich Korach
109 -2.00 3 Brian Haley
109 -2.00 1 Thomas Jonasson
109 -2.00 1 Hunter Paniagua
109 -2.00 2 Nick Klein
109 -2.00 1 Troy Perry
109 -2.00 3 Andrew Stella
109 -2.00 1 Bert Williams
109 -2.00 1 Rob Weaver
109 -2.00 6 Eddy Gendreau
109 -2.00 1 Bruce Laughlin
109 -2.00 1 Eric Ramirez
109 -2.00 1 Campbell Smith
121 -1.86 11 Jabir Ponce
122 -1.75 10 Ely Klem
123 -1.73 11 Carroll Oliver
124 -1.50 1 Mario Avila
124 -1.50 3 Julian Bullard
124 -1.50 1 Jamin Lyons
127 -1.39 14 Eric Leaf
128 -1.38 4 Caleb Rancourt
129 -1.33 3 Sean Pool
129 -1.33 6 Aaron Sorber
131 -1.25 4 Maxwell Bieber
131 -1.25 4 Michael Lopez
131 -1.25 2 Mariano Hernandez
134 -1.10 5 Lenny Waxdeck
135 -1.06 16 Dave McGrath
136 -1.00 1 Christopher McArthur
136 -1.00 1 Phil Gauthier
136 -1.00 1 Jeffery Jeffro Bodine Schleich
136 -1.00 1 Ernie Rogers
136 -1.00 1 Austin Pedigo
136 -1.00 1 Kris Mickelson
136 -1.00 1 Alex Salinas
136 -1.00 2 Matthew Hansen
136 -1.00 1 Jake McCurdy
136 -1.00 2 Charlie Sedlock
136 -1.00 1 Rafael Arriaza
147 -0.93 14 Chris Isom
148 -0.92 12 Ben Bell
149 -0.87 15 Steven P
150 -0.86 7 Ben Bleiman
151 -0.83 3 Steve Erle
152 -0.80 5 Joe DiMiero
153 -0.79 12 Louie Michaud
154 -0.75 4 Adam Viele
155 -0.60 5 John Drago
156 -0.50 2 Luis Solis
156 -0.50 1 Christian DeLancy
156 -0.50 2 Lumen Sivitz
156 -0.50 2 Alex Semfel
156 -0.50 3 Greg Rose
161 -0.43 7 Chris Butterworth
162 -0.38 4 Robert Mudd
163 -0.33 6 Bill Emmack
164 -0.27 15 Marvin Paddock
165 -0.25 2 Paul Campbell
165 -0.25 4 Jason Tindell
167 -0.22 9 Jacob Aftreth
168 -0.21 12 Casey Livingood
169 -0.20 5 Life Gibson
170 -0.15 13 Mike Hudson
171 -0.07 7 Jon Kurland
172 -0.06 8 Morgan Womble-Dahl
173 0.00 1 Bryan Gross
173 0.00 1 Jeremy Steel
173 0.00 3 Rob Roberts
173 0.00 1 Mike Johnson
173 0.00 1 Matty Angell
173 0.00 1 Joel Murnan
173 0.00 1 Corey Begay
173 0.00 1 Adriano Rothschild
173 0.00 1 Jay Ferrick
173 0.00 1 Rich Rushlow
173 0.00 1 Drew Galiger
173 0.00 1 Peter Black
173 0.00 1 Maks Tobiasiewicz
173 0.00 1 Luis Cisneros
173 0.00 1 Nick Arredondo
188 0.13 8 Josh Audibert
189 0.30 10 Grayson McClung
190 0.39 18 Glenn Murray
190 0.39 9 Sam Schwartz
192 0.42 12 Nate Kindler-Balmy
193 0.42 13 Brian Kelly
194 0.50 2 Kevin Eckert
194 0.50 1 Heath Bartosh
194 0.50 1 Angelo Greco
197 0.56 8 Bob Wigersma
198 0.67 3 Bob Proctor
199 0.68 17 Chris Sherwood
200 0.69 16 Kevin Smeds
201 0.75 2 Joe Cornett
201 0.75 2 Sebastian Haas
203 0.93 7 Nate Clarke
204 1.00 1 Thomas Oliver
204 1.00 1 Connor Fischer
204 1.00 2 Thor Scordelis
204 1.00 1 Josh Draper
204 1.00 1 Orrin Hoffman
204 1.00 1 Cory Sprous
204 1.00 1 Justin Safdie
211 1.03 18 Matt Duncanson
212 1.17 9 Nate Stone
212 1.17 3 David Williams
212 1.17 3 David Wolf
215 1.20 5 Maxwell Plank
216 1.29 7 Nenad Zagorac
217 1.48 21 Joe Canose
218 1.50 2 Gerald McPartland
218 1.50 1 Andy Nguyen
218 1.50 1 Martin Stenflo
218 1.50 4 George Luu
222 1.59 16 Jesse Walton
223 1.67 3 Rex Crossen
224 1.79 14 Tyler Bonner
225 2.00 2 Jeremy Nuyens
225 2.00 12 Joe Ambro
225 2.00 1 Jake Chapman
225 2.00 1 Brad Everett
225 2.00 1 Curtis Spence
225 2.00 1 Pento Malekzadeh
225 2.00 1 Dale Ferreira
225 2.00 4 Justin Box
225 2.00 1 Derek Dubow
225 2.00 1 Chris Doody
235 2.04 14 Graham Biller
236 2.07 7 Alex Trono
237 2.10 5 Dan Gottlieb
238 2.13 4 Ronit Taggart
239 2.17 12 Jake Ward
240 2.19 16 Tom Murtiashaw
241 2.20 5 Beth Aubuchon
242 2.22 9 Tracy Ruggles
243 2.25 8 Jon Toby
244 2.33 3 Alberto Perez
245 2.38 4 Erik Gough
246 2.42 6 Philip Tyler
247 2.50 16 Dave Headd
247 2.50 2 Ryan Morrison
247 2.50 1 Rebekkah Sidwell
247 2.50 1 Jeffrey Higuera
247 2.50 3 Nate Gonzalez
247 2.50 2 Brent Struve
247 2.50 4 Kelvin Preciado
254 2.57 7 Matt Gibb
255 2.67 12 Gerrad Greenberg
256 2.71 14 Eric Plett
257 2.75 2 Austin Widdowson
257 2.75 10 Joe Donahue
259 2.78 18 Alex Georgopoulos
260 2.83 3 Stuart Williams
260 2.83 6 Steven Cole
262 2.86 7 Mike Wilson
263 2.92 6 Tom Wang
264 2.95 11 Sean Pierson
265 3.00 1 Michael Bueno
265 3.00 1 Andrew Ferrari
265 3.00 1 Jason Karle
265 3.00 1 Matthew Padua
265 3.00 1 Joshua Ferraro
265 3.00 1 Tim Henshaw
265 3.00 1 Nick Norena
272 3.17 6 Ismael Vieyra
273 3.25 2 Joshua Kiblinger
274 3.50 3 Erica Norton
274 3.50 2 Matthew Vierra
274 3.50 1 Calvin Albright
277 3.63 4 Alan Chambless
278 3.67 3 Daniel Johengen
279 3.69 8 Cooper Copland
280 3.70 5 Scott Collyer
281 3.82 11 Daniel Dodell
282 4.00 1 Ron Hanhy
282 4.00 1 Dan Denham
282 4.00 1 Axel Baker
282 4.00 1 Anthony Heyden
282 4.00 1 Matthew Schrenk
282 4.00 2 Patrick O’Brien
282 4.00 1 Brad DeLange
282 4.00 1 Michael Gunnell
282 4.00 3 Matthew Long
291 4.04 12 Steve Parrott
292 4.25 4 Ross Collier
293 4.33 3 Ray Cooper
294 4.43 7 Rob Moran
295 4.45 10 Jason Chinn
296 4.50 2 Geoff Goss
296 4.50 1 Kimo Patricio
296 4.50 2 Tim DeWeerd
299 4.58 6 Joe Frediani
300 4.75 2 Winston Chang
301 4.78 9 Robert Powell
302 4.83 3 Marisa Marquez
302 4.83 6 Pablo Ruggia
304 4.88 8 Todd Georgopapadakos
305 4.93 20 Craig Bostwick
306 4.96 13 Eugene Kim
307 5.00 1 Andrew Moralez
307 5.00 1 Matt Paddock
307 5.00 1 Robert Schuermann
307 5.00 1 Jon Marcus
307 5.00 1 Pete D’Agostino
307 5.00 1 Steve Archuleta
307 5.00 1 Shifukato Yoshi
314 5.27 11 Salla Vaerma-Jadlos
315 5.31 16 Shu Pan
316 5.32 11 Michal Brzozek
317 5.50 2 Jennifer Heck
317 5.50 2 Allen Wigington
317 5.50 1 Ryan Kirk
320 5.61 9 Adam Storr
321 5.80 15 Max McLay
322 6.00 1 Brady Samuel Kauk
322 6.00 1 Brian Montroy
322 6.00 2 Thomas Seibert
322 6.00 1 Dan Warburton
322 6.00 1 Andy Simpson
327 6.20 15 Marty Aitken
328 6.35 10 Adam Howard
329 6.50 1 Will Mallonee
329 6.50 1 Eli Smeds
331 6.80 5 Adam Hess
332 7.00 1 John Correa
332 7.00 2 Alex Maddox
332 7.00 1 Evan Churchill
332 7.00 1 Sam Goldenberg
332 7.00 1 Erik Rosenkranz
337 7.50 1 Laurence Francisco
337 7.50 2 Kristina Ohlson
337 7.50 1 John Ferguson
340 7.75 2 Otto Koivunen
340 7.75 2 Trevor Woolf
342 7.78 9 David Plank
343 7.82 14 Hugh Harrell
344 7.83 3 Josh Tippett
345 7.95 19 Mark Willson
346 8.00 1 Gianni Venditti
346 8.00 1 Matt Robinson
346 8.00 1 Hunter McCarthy
346 8.00 1 Gail White
346 8.00 1 Dave Von Dollen
346 8.00 1 Nick Jaros
352 8.15 13 Gerald Richelson
353 8.17 6 Luke Hammer
354 8.25 4 Joshua Ferguson
355 8.38 4 Erik Poppen
356 8.40 5 Alex Dangles
357 8.50 1 Scott Snyder
357 8.50 1 Rob Levander
357 8.50 1 Alex Krawiec
360 8.75 2 Ruben Dones
360 8.75 4 Nick King
362 9.00 1 Damien Scott
362 9.00 1 Mike Alvarez
362 9.00 1 Cyndi Baker
362 9.00 3 Andrew Tinsman
362 9.00 5 Luis Paredes
367 9.25 4 Patrick Nelson
368 9.78 18 Fred Herrera
369 9.89 9 Jorge Novoa
370 10.00 3 Derek Kwan
370 10.00 1 Todd Sutton
370 10.00 1 Anthony Bissig
370 10.00 1 Matt Prescott
370 10.00 6 Dennis Condos
370 10.00 1 Aaron Jacks
376 10.04 12 Ashley Foust
377 10.13 4 Blake Riggs
378 10.17 6 Tyler Stegall
379 10.50 1 Ken Butler
380 11.00 1 Thomas Bowman
380 11.00 2 Benjamin Murphy
380 11.00 1 Logan Martin
383 11.39 18 TJ Carskadon
384 11.50 2 Donald Wood
384 11.50 3 Javier Bastidas
386 11.62 13 Val St Louis
387 11.78 9 Owen Searls
388 12.00 1 Fernando Vega
388 12.00 2 Mitchel Cinotti
388 12.00 1 Marc Wagenseil
391 13.25 2 Hasan Turunc
392 13.44 8 Micah Hall
393 13.79 14 Paris Isom
394 13.92 13 Harry Yee
395 14.00 2 Jeff Sparrow
395 14.00 1 Denise Spence
397 14.28 9 Wesley Silveira
398 14.33 3 Micah Zayner
399 15.00 1 Nathan Lepore
399 15.00 2 Luis Barcelo
401 16.00 1 Logan Anselm
401 16.00 1 Eugene Gershtein
401 16.00 1 Michael Maloney
404 17.00 1 Andrea Roegiers
404 17.00 1 Lane Lillquist
404 17.00 1 Dena Beauchesne
407 17.33 3 Kirra Susalla
408 18.00 1 Lindy Patterson
408 18.00 1 Chris Noard
410 18.17 6 Sakiko Takeuchi
411 18.50 1 Ken Pan
411 18.50 1 Ronald Mendola
413 22.25 2 Kemal Elezovic
414 24.00 4 Chloe Stein
415 24.67 3 Eben LaPier
416 25.00 1 Bryan Lee
417 27.25 2 Denise Lopez
418 28.00 1 Asa Alexander
419 29.00 2 Ben Lieberman
420 37.50 2 Matthew Gonzales
421 38.00 5 Arthur Gendreau
422 39.00 1 Will Pedersen