Jeff "Salzy" Salzenstein (born October 14, 1973) is an American left-handed former professional tennis player.[1] In 1986 he won the US Boys' 12 National Hard Court Tennis Singles Championship and Doubles Championship. His highest singles ranking was world No. 100 in June 2004, when he became the oldest American to break into the top 100 in men's tennis, at 30 years of age.[2] His career-high in doubles was No. 68 in November 1997.[2]
As a sixth-grader, in addition to playing tennis the 12-year-old, five-foot tall, 85 pound Salzenstein was an A student, the president of his sixth-grade class, the editor of its newspaper, and a basketball and soccer player.[3] In 1986 he won the US Boys' 12 National Hard Court Tennis Singles Championship (defeating Brian Dunn and Vince Spadea along the way) and Doubles Championship.[7][8][3] He was the 13th double winner in the tournament’s 25-year history, and was also awarded the tournament’s sportsmanship award.[3] That year he also made it to the final, where he lost in a final set tiebreaker, in the 12-and-under National Clay Courts Championship.[9]
In 1990 Salzenstein reached the quarter-finals at the Under-16 Championships, and in 1992 he was ranked second in Under-18 boys in the United States.
He attended Cherry Creek High School (class of 1992) in Greenwood Village, Colorado.[10] As a freshman, Salzenstein played for the No. 1 singles Colorado state title, and as a sophomore he won the title.[11][12] As a junior, he was 5' 7" tall and weighed 120 pounds, was the team's # 1 singles player, and was runner-up in the state singles championship.[10][11] He won the singles state title as a senior, and was captain of the school tennis team.[13][10] In his high school career, his record was 74-6.[10]
Salzenstein attended Stanford University on a half-scholarship, earned an economics degree, played #1 singles his sophomore, junior, and senior years for the Stanford Cardinal, and was named an All-American in tennis two years in a row.[6][14] He reached the semifinals at the NCAA singles championships in 1995.[15] He won back-to-back team national titles with the team when he was its captain in 1995 and 1996.[13] He was PAC-10 All-Academic in 1994 (second team), and 1995 and 1996 (first team).[16] He was named the Senior Athlete of the Year at Stanford in 1996.[17]
Salzenstein was injured for much of 1998 and 1999, and had surgeries before he was 24 years old on his knee and ankle.[6][18] He finished his degree at Stanford at this time.[15]
Salzenstein played at the Australian Open, Roland Garros, and Wimbledon in 2004, and at the International Series Tournament at Delray Beach, where he made it to the semifinals.[15] In November 2004, he upset world No. 24 Jiří Novák) in straight sets in Luxembourg. In 2004 he became the oldest American to break into the top 100 in men's tennis, when Salzenstein did it at 30 years of age.[20]
At 33 years of age, Salzenstein stopped competing in tennis, and moved into coaching.[6]
Salzenstein is a certified nutritional therapist.[21] He is also the founder of JS Performance Tennis School in Denver, Colorado, the CEO of Tennis Evolution, and runs a YouTube tennis coaching channel that goes by the same name.[22][21] Among others, he has coached Vasilisa Bardina.[13][21][20]
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
United States
Alex O'Brien
Mark Merklein 
Arne Thoms
Antony Dupuis
Bjorn Rehnquist
Dmitry Tursunov
Arvind Parmar
Wesley Moodie
Max Mirnyi 
Kevin Ullyett
Cecil Mamiit 
Jimy Szymanski
Emanuel Couto 
Tamer El Sawy
Oscar Ortiz 
Diego Veronelli 
Lee Hyung-taik
