|Country (sports)||United States|
|Born||May 1, 1959|
Princeton, New Jersey
|Height||6 ft 2 in (1.88 m)|
|Highest ranking||No. 34 (March 21, 1983)|
|Grand Slam Singles results|
|Australian Open||4R (1985)|
|French Open||2R (1982)|
|US Open||3R (1984)|
|Highest ranking||No. 169 (January 3, 1983)|
|Grand Slam Doubles results|
|US Open||1R (1980, 82, 83, 85)|
Lapidus won his only Grand Prix title in 1982, at the Stowe Open. He defeated Tim Mayotte, Brad Gilbert, John Alexander and Tom Gullikson en route to the final, which he won in straight sets, over Eric Fromm. The American also made semi-finals in Basel and Stockholm that year.
His best Grand Slam performance came in the 1985 Australian Open. He was beaten in the fourth round by sixth seed Johan Kriek. His only other appearances in the third round were at the 1984 US Open (as a qualifier) and the 1986 Wimbledon Championships.
During his career, Lapidus had a number of wins over players ranked in the world's top 20, including Peter Fleming at South Orange in 1979, Chip Hooper at Tampa in 1982, Aaron Krickstein at North Conway in 1984, Vitas Gerulaitis at Houston in 1985 and Juan Aguilera at Memphis in 1985. His best win came in 1982, at a Hartford WCT tournament, where he beat the world number six, José Luis Clerc.
In 1991, Lapidus became head coach of Duke University and remained in that role until 2008. He finished with a 372-126 record in the Atlantic Coast Conference (ACC), with his wins tally bettered by only two coaches in history. On six occasions he was named as the ACC Coach of the Year and he coached 11 ACC Championships.
Grand Prix career finals
Singles: 1 (1–0)
|Win||1–0||1982||Stowe, United States||Hard||Eric Fromm||6–4, 6–2|
Doubles: 1 (0–1)
|Loss||0–1||1982||Paris, France||Hard||Richard Meyer|| Brian Gottfried