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1989 Davis Cup Semifinal: Boris Becker (GER) def. Andre Agassi (USA), 6-7, 6-7, 7-6, 6-3, 6-4
In only their second head-to-head encounter, Agassi and Becker—who would both go on to become two of the greatest players in Davis Cup history—battled tooth and nail. Though the fast indoor surface was perfectly tailored to Becker’s game, it was Agassi who took the first two sets and got himself into a winning position in the third. A win by Agassi would’ve given the U.S. a 2-0 lead after the first singles day.
However, as he’d been doing all year, Becker came up with the goods in the clutch, taking the third set in a tiebreaker. From there, he used the energy of the home crowd to help him through the fourth set. Play was suspended until the next day for the fifth set, but give Becker any type of breathing room and he’s bound to come through, which he did to the tune of 6-4 in the fifth.