Richard N. Leach Sr. (March 6, 1940 – October 10, 2023) was an American professional tennis player and coach.

Lindsay Davenport, who married Jon, is his daughter-in-law.

[2] Leach coached the USC Trojans men's tennis team for 23 years from 1980 to 2002, leading them to the 1991, 1993, 1994, and 2002 NCAA team championships.

As a player in the 1960s he had been an All-American for the Trojans and competed at the US Open.

[3][4] Leach died on October 10, 2023, at the age of 83.