Sampras is considered as Agassi's arch-rival and one of the greatest players of all time. They played 34 times, with Sampras leading 20-14. They met in five Grand Slam finals, with Sampras winning four.
Federer is widely regarded as the greatest player of all time and has won a record 20 Grand Slam titles. He played 11 times against Agassi, with Federer leading 8-3. They met in three Grand Slam finals, with Federer winning all of them.
Nadal is one of the greatest clay court players of all time and has won 20 Grand Slam titles, tying with Federer. He played four times against Agassi, with Nadal leading 3-1. They met in one Grand Slam semifinal, which Nadal won.
Becker is a six-time Grand Slam champion and a former world No. 1. He played 14 times against Agassi, with Becker leading 10-4. They met in three Grand Slam semifinals, with Becker winning two.
Hewitt is a two-time Grand Slam champion and a former world No. 1. He played 16 times against Agassi, with Hewitt leading 9-7. They met in two Grand Slam finals, with each player winning one.