Jaime Yzaga Tori (born October 23, 1967 in Lima, Peru) is a former professional tennis player from Peru.

Yzaga played on the professional tour from 1984 to 1996.

Yzaga reached career-high rankings of World No. 18 in singles and World No. 54 in doubles (both in 1989). He was a quarter-finalist at the Australian Open in 1991, and at the US Open in 1994, reaching the final eight by defeating a dominant Pete Sampras in 5 sets, in the previous round. He had earlier been the first ever opponent of Pete Sampras in the main draw of a Grand Slam tournament, in the first round of the U.S. Open in 1988, also winning that match in 5 sets. Since retiring as a player, Yzaga has served as captain of Peru's Davis Cup team.

Peter "Pete" Sampras (/ˈsæmprəs/; born August 12, 1971) is a retired Greek–American tennis player and former world number 1. During his 15-year tour career, he won 14 Grand Slam singles titles and became recognized as one of the greatest tennis players of all time.

Sampras debuted on the professional tour in 1988 and played his last top-level tournament in 2002 when he won the US Open, defeating rival Andre Agassi in the final. He was the year-end world no. 1 for six consecutive years (1993–1998), a record for the open era. His seven Wimbledon singles championships are also an Open Era record. He spent 286 weeks at no. 1, the most of any male player. His five US Open singles titles is an Open Era record shared with former world no. 1 players Jimmy Connors and Roger Federer. Sampras is the last American male to win Wimbledon (2000) and the ATP World Tour Finals (1999).