The two crossword solutions for the term AGASSI RIVAL are SAMPRAS (7 letters) and STICH (5 letters). Both of these players were professional tennis players who competed against each other in the 1990s. Sampras was an American player who won 14 Grand Slam singles titles, while Stich was a German player who won two Grand Slam singles titles. They were both rivals of Andre Agassi, another professional tennis player from the same era.