Jeff "Salzy" Salzenstein (born October 14, 1973) is an American left-handed former professional tennis player.

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.

He attended Cherry Creek High School (class of 1992) in Greenwood Village, Colorado.

[10][11] He won the singles state title as a senior, and was captain of the school tennis team.

[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.

At the Roland Garros doubles event, Salzenstein and partner Petr Korda made the round of 16.

In November, he won the Urbana, Illinois Challenger, defeating Antony Dupuis 7–6 (4), 6–4 in the final.

[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.

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.