(AP Photo/Simon Baker)

MELBOURNE, Australia (AP) Rafael Nadal finally got the better of a crazy, long tiebreaker and knew he'd won half the battle.

After saving four set points and missing with the first six of his own, Nadal finally clinched a tiebreaker that lasted 28 minutes and 40 seconds to set himself on course to secure a spot in the Australian Open quarterfinals for a 14th time.

After his 7-6 (14), 6-2, 6-2 fourth-round victory over fellow left-hander Adrian Mannarino on Sunday, Nadal is potentially just three wins away from a men's record 21st Grand Slam singles title.

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