Boys Tennis School Records
(updated through 2024 season)

Career and Single Season Records

Most Singles Wins, Career

1 Will Koehrsen (2014)

143

2 Stephan Rauh (2010)

111

3 Mitchell Nguyen (2014)

97

4 Ryan Donnelly (2010)

81

5 Ty Wyffels (2003)

78

6 Alexander Schroff (2023)

76

7 Nate Rauh (2005)

74

8 Bryton Short (2023)

71

9 Ryan Willard (2016)

69

(tie) Dan Ritschel (1993)

69

Most Doubles Wins, Career

1 Christoph Goettler (2013)

128

2 David Stewart (2010)

126

3 Fletcher Koehrsen (2017)

117

4 Nate Wilson (2010)

111

5 Kyle Shoff (2004)

107

6 Ryan Willard (2016)

92

7 Tyler Lampe (2008)

89

8 Quinn Vaughn (2012)

84

9 Ethan Greenfield (2020)

79

10 Brian Lelm (2021)

78

100 Win Club, Career

1 Will Koehrsen (2014)

184

2 Fletcher Koehrsen (2017)

172

(tie) Christoph Goettler (2013)

172

(tie) David Stewart (2010)

172

5 Mitchell Nguyen (2014)

168

6 Kyle Shoff (2004)

166

7 Ryan Willard (2016)

161

8 Stephan Rauh (2010)

159

9 Nate Wilson (2010)

151

10 Nate Rauh (2005)

129

11 Ryan Donnelly (2010)

128

(tie) Tyler Lampe (2008)

128

13 Ty Wyffels (2003)

120

(tie) Brian Lelm (2021)

120

15 Bryton Short (2023)

118

16 Joe Harris (2003)

117

17 Ethan Greenfield (2020)

116

18 Quinn Vaughn (2012)

115

19 Alexander Schroff (2023)

109

20 Hudson Shaw (2024)

107

21 Andy Gravlin (2001)

106

(tie) Nick Vaughn (2006)

104

23 Carsten Boast (2017)

102

24 Tyler Ngo (2014)

100

Most Singles Wins, Season

1 Will Koehrsen (2012)

40

2 Stephan Rauh (2010)

39

3 Will Koehrsen (2011)

38

4 Bryton Short (2023)

37

5 Will Koehrsen (2014)

35

(tie) Mitchell Nguyen (2012)

35

7 Stephan Rauh (2008)

32

(tie) Alexander Schroff (2023)

32

9 Kevin Wang (2010)

31

10 Will Koehrsen (2013)

30

(tie) Petr Vesely (2011)

30

(tie) Mitchell Nguyen (2014)

30

Most Doubles Wins, Season

1 Christoph Goettler (2013)

42

2 Christoph Goettler (2012)

39

(tie) David Stewart (2010)

39

4 Quinn Vaughn (2012)

37

5 Tyler Lampe (2008)

35

(tie) Matt Elliott (2008)

35

(tie) David Stewart (2008)

35

(tie) Nate Wilson (2008)

35

(tie) Johan Olsen (2017)

35

(tie) Harry Hawbaker (2021)

35

Most Total Wins, Season

1 Bryton Short (2023)

54

(tie) Christoph Goettler (2013)

51

(tie) David Stewart (2010)

51

4 Brian Lelm (2021)

49

(tie) Harry Hawbaker (2021)

49

(tie) Christoph Goettler (2012)

49

7 Will Koehrsen (2013)

48

8 Will Koehrsen (2011)

47

(tie) Quinn Vaughn (2012)

47

10 Will Koehrsen (2012)

46

(tie) Nate Wilson (2008)

46

Most Singles Matches, Career

1 Will Koehrsen (2014)

160

2 Stephan Rauh (2010)

143

3 Ryan Donnelly (2010)

124

4 Mitchell Nguyen (2014)

116

5 Ty Wyffels (2003)

107

Most Doubles Matches, Career

1 David Stewart (2010)

168

2 Christoph Goettler (2013)

161

3 Nate Wilson (2010)

151

4 Fletcher Koehrsen (2017)

149

5 Kyle Shoff (2004)

148

Most Total Matches, Career

1 David Stewart (2010)

222

2 Fletcher Koehrsen (2017)

214

3 Kyle Shoff (2004)

213

4 Stephan Rauh (2010)

211

5 Mitchell Nguyen (2014)

210

6 Will Koehrsen (2014)

208

7 Christoph Goettler (2013)

205

8 Ryan Willard (2016)

202

9 Nate Wilson (2010)

199

10 Ryan Donnelly (2010)

194

Most Singles Matches, Season

1 Stephan Rauh (2008)

47

(tie) Ryan Donnelly (2008)

47

3 Will Koehrsen (2012)

45

4 Stephan Rauh (2010)

44

5 Will Koehrsen (2011)

43

Most Doubles Matches, Season

1 Christoph Goettler (2013)

51

2 Christoph Goettler (2012)

48

3 Quinn Vaughn (2012)

46

(tie) Tyler Lampe (2008)

46

5 David Stewart (2008 and 2010)

45

(tie) Matt Elliott (2008)

45

(tie) Nate Wilson (2008)

45

(tie) Carsten Boast (2016)

45

(tie) Johan Olsen (2017)

45

Most Total Matches, Season

1 Christoph Goettler (2013)

60

2 Bryton Short (2023)

59

3 Christoph Goettler (2012)

58

(tie) Tyler Lampe (2008)

58

(tie) David Stewart (2008)

58

(tie) Hudson Shaw (2023)

58

7 Quinn Vaughn (2012)

57

(tie) David Stewart (2010)

57

(tie) Kyle Shoff (2002)

57

(tie) Fletcher Koehrsen (2015)

57

(tie) Dane Hutchison (2023)

57

Best Singles Win %, Career (min. 30 matches)

1 Christoph Goettler 44-0

1.000

2 Kyle Shoff 59-6

.908

3 Will Koehrsen 143-17

.894

4 Bryton Short 71-11

.866

5 David Stewart 46-8

.852

6 Fletcher Koehrsen 55-10

.846

7 Quinn Vaughn 31-6

.838

8 Mitchell Nguyen 97-19

.836

9 Nate Wilson 40-8

.833

10 Ryan Willard 69-14

.831

Best Doubles Win %, Career (min. 30 matches)

1 Harry Hawbaker 43-4

.915

2 Jeremiah Poppen 29-3

.906

3 Daren Gravlin 39-6

.867

4 Jon Vanecko 45-7

.865

5 Bryton Short 47-8

.855

6 Will Koehrsen 41-7

.854

7 Nate Rauh 55-10

.846

8 Ryan Lowe 36-7

.837

9 Alexander Schroff 33-7

.825

10 Brian Lelm 78-17

.821

Best Total Win %, Career (min. 50 matches)

1 Harry Hawbaker 66-7

.904

2 Will Koehrsen 184-24

.885

3 Bryton Short 118-19

.861

4 Jon Vanecko 67-12

.848

5 Jeremiah Poppen 43-8

.843

6 Christoph Goettler 172-33

.839

7 Daren Gravlin 65-13

.833

8 Ryan Lowe 47-10

.825

9 Brian Lelm 120-26

.822

10 Dan Ritschel 76-17

.817

Best Singles Win %, Season (min. 15 matches)

1 Kyle Shoff (2001) 16-0

1.000

2 Ryan Willard (2015) 18-1

.947

3 Will Koehrsen (2014) 35-3

.921

4 Bryton Short (2023) 37-4

.902

5 Brian Lelm (2021) 17-2

.895

(tie) Fletcher Koehrsen (2017) 17-2

.895

7 Will Koehrsen (2012) 40-5

.889

(tie) Ryan Willard (2014) 16-2

.889

(tie) Kyle Shoff (2002) 16-2

.889

10 Stephan Rauh (2010) 39-5

.886

Best Doubles Win %, Season (min. 15 matches)

1 Joel Sutter (2016) 25-0

1.000

2 Jordan Rivera (2016) 23-1

.958

3 Bryton Short (2023) 17-1

.944

4 Brian Lelm (2021) 32-2

.941

5 Jeremiah Poppel (2019) 22-2

.917

6 Ryan Lowe (2019) 19-2

.905

(tie) Daren Gravlin (1996) 19-2

.905

8 Zack Lambiase (2017) 18-2

.900

9 Hudson Shaw (2024) 24-3

.889

10 Jon Vanecko (1996) 22-3

.880

Best Total Win %, Season (min. 25 matches)

1 Jordan Rivera (2016) 27-2

.931

2 Brian Lelm (2021) 49-4

.925

3 Ryan Lowe (2019) 24-2

.923

4 Bryton Short (2023) 54-5

.915

5 Will Koehrsen (2011) 47-5

.904

6 Will Koehrsen (2012) 46-5

.902

7 Stephan Rauh (2010) 45-5

.900

8 Joel Sutter (2016) 26-3

.897

9 David Stewart (2010) 51-6

.895

10 Harry Hawbaker (2021) 49-6

.891

Postseason / Miscellaneous Results

Sectional Singles Titles

1 Will Koehrsen

3

2 Bryton Short

2

(tie) Ty Wyffels

2

4 Mitchell Nguyen

1

(tie) Stephan Rauh

1

(tie) Nate Rauh

1

(tie) Michael Poppen

1

(tie) Ethan Greenfield

1

(tie) Alexander Schroff

1

Sectional Doubles Titles

1 David Stewart

3

(tie) Tyler Lampe

3

2 Christoph Goettler

2

(tie) Quinn Vaughn

2

(tie) Stephan Rauh

2

(tie) Brian Lelm

2

Total Sectional Titles

1 Will Koehrsen

4

2 David Stewart

3

(tie) Stephan Rauh

3

(tie) Tyler Lampe

3

5 Christoph Goettler

2

(tie) Mitchell Nguyen

2

(tie) Quinn Vaughn

2

(tie) Nate Rauh

2

(tie) Ty Wyffels

2

(tie) Michael Poppen

2

(tie) Ethan Greenfield

2

(tie) Brian Lelm

2

Bryton Short

2

Mid-Illini Conference Singles Titles

1 Will Koehrsen

4

2 Dan Ritschel

3

Mid-Illini Conference Doubles Titles

1 Fletcher Koehrsen

4

(tie) Nate Wilson

4

3 Carsten Boast

3

(tie) David Stewart

3

Total Mid-Illini Conference Titles

1 Will Koehrsen

4

(tie) Fletcher Koehrsen

4

(tie) Mitchell Nguyen

4

(tie) Nate Wilson

4

5 Dan Ritschel

3

(tie) Carsten Boast

3

(tie) David Stewart

3

8 Ryan Willard

2

(tie) Stephan Rauh

2

(tie) Nate Rauh

2

(tie) Kyle Shoff

2

(tie) Ryan Donnelly

2

(tie) Greg Coffman

2

(tie) Quinn Vaughn

2

(tie) Brendan Axelson

2

(tie) Ethan Greenfield

2

(tie) Bryton Short

2

FRESHMAN RECORDS

Singles Wins, Freshman

1 Will Koehrsen (2011)

38

2 Kevin Wang (2010)

31

3 Ryan Willard (2013)

24

4 Ryan Donnelly (2007)

19

5 Kyle Shoff (2001)

16

(tie) Brian Lelm (2018)

16

Doubles Wins, Freshman

1 Ethan Greenfield (2017)

31

2 Fletcher Koehrsen (2014)

29

3 Mitchell Nguyen (2011)

28

4 Tyler Ngo (2011)

26

5 Stephan Rauh (2007)

24

Total Wins, Freshman

1 Will Koehrsen (2011)

47

2 Mitchell Nguyen (2011)

41

3 Fletcher Koehrsen (2014)

40

4 Ethan Greenfield (2017)

38

(tie) Kyle Shoff (2001)

38

6 Tyler Ngo (2011)

37

7 Stephan Rauh (2007)

35

8 Kevin Wang (2010)

34

9 Ryan Willard (2013)

33

10 David Stewart (2007)

32

(tie) Brian Lelm (2018)

32

SOPHOMORE RECORDS

Singles Wins, Sophomore

1 Will Koehrsen (2012)

40

2 Mitchell Nguyen (2012)

35

3 Stephan Rauh (2008)

32

4 Ryan Donnelly (2008)

29

5 Nate Rauh (2003)

25

Doubles Wins, Sophomore

1 David Stewart (2008)

35

(tie) Nate Wilson (2008)

35

3 Tommy Sopko (2024)

30

(tie) Christoph Goettler (2011)

30

(tie) Fletcher Koehrsen (2015)

30

(tie) Brian Lelm (2019)

30

Total Wins, Sophomore

1 Will Koehrsen (2012)

46

(tie) Nate Wilson (2008)

46

3 Fletcher Koehrsen (2015)

45

(tie) David Stewart (2008)

45

5 Bryton Short (2021)

44

(tie) Mitchell Nguyen (2012)

44

7 Christoph Goettler (2011)

43

8 Kyle Shoff (2002)

42

9 Tommy Sopko (2024)

40

(tie) Ethan Greenfield (2018)

40

JUNIOR RECORDS

Singles Wins, Junior

1 Will Koehrsen (2013)

30

2 Stephan Rauh (2009)

29

3 Ty Wyffels (2002)

26

(tie) Nick Vaughn (2005)

26

(tie) Alexander Schroff (2022)

26

Doubles Wins, Junior

1 Christoph Goettler (2012)

39

2 David Stewart (2009)

34

3 Carsten Boast (2016)

33

(tie) Joey Shallat (2019)

33

5 Kyle Shoff (2003)

30

(tie) Nate Rauh (2004)

30

Total Wins, Junior

1 Christoph Goettler (2012)

49

2 Will Koehrsen (2013)

48

3 Ryan Willard (2015)

45

(tie) Mitchell Nguyen (2013)

45

5 Kyle Shoff (2003)

44

(tie) Nate Rauh (2004)

44

(tie) David Stewart (2009)

44

(tie) Stephan Rauh (2009)

44

(tie) Fletcher Koehrsen (2016)

44

10 Carsten Boast (2016)

42

SENIOR RECORDS

Singles Wins, Senior

1 Stephan Rauh (2010)

39

2 Bryton Short (2023)

37

3 Will Koehrsen (2014)

35

4 Alexander Schroff (2023)

32

5 Petr Vesely (2011)

30

Doubles Wins, Senior

1 Christoph Goettler (2013)

42

2 David Stewart (2010)

39

3 Quinn Vaughn (2012)

37

4 Tyler Lampe (2008)

35

(tie) Matt Elliott (2008)

35

(tie) Harry Hawbaker (2021)

35

Total Wins, Senior

1 Bryton Short (2023)

54

2 Christoph Goettler (2013)

51

(tie) David Stewart (2010)

51

4 Brian Lelm (2021)

49

(tie) Harry Hawbaker (2021)

49

6 Quinn Vaughn (2012)

47

7 Alexander Schroff (2023)

46

8 Ryan Willard (2016)

45

(tie) Tyler Lampe (2008)

45

(tie) Stephan Rauh (2010)

45

TEAM RECORDS

Most Wins, Season

2021

24

2016, 2012

23

2023, 2011

22

2019, 2010

21

2017, 2014

20

Fewest Losses, Season

2019, 2018, 2011, 2010, 2003, 1993

1

2021, 2017, 2016, 2014, 2009, 2004, 2002

2

2008, 2007, 2001, 1997, 1996, 1990

3

Most Shutout Wins, Team

1 2021

17

2 2016

15

3 2010

14

4 2019

13

5 2024, 2014, 2002

12

Highest Sectional Finish, Team

1 2024, 2023, 2022, 2021, 2019, 2018, 2014, 2012, 2011, 2010, 2009, 2008, 2007, 2004, 2003

1st

2 2017, 2016, 2013, 2002, 1999, 1998, 1993

2nd

Most State Qualifiers, Team

1 2022, 2021, 2019, 2018, 2011, 2010, 2008

6

2 2024, 2007, 2004, 2003

5

3 2023, 2017, 2016, 2015, 2014, 2012, 2009, 2005, 2002

4

COACHING RECORDS

Most Wins

1 Kelly Willard (1998-present)

426

2 Ron Kiesewetter (1991-1997)

55

3 Steve Bortolotti (1988-1990)

23

Highest Win %

1 Kelly Willard (426-80)

.842

2 Ron Kiesewetter (55-33)

.625

3 Steve Bortolotti (23-15)

.605

# of State Qualifiers (doubles team =2)

1 Kelly Willard

112

2 Ron Kiesewetter

7

Most Years Coached

1 Kelly Willard

27

2 Ron Kiesewetter

7

3 Steve Bortolotti

3