Tennis: Kei Nishikori survives five-set thriller

Eighth-seeded Kei Nishikori withstood 59 aces from Ivo Karlovic before beating the veteran Croatian 6-3, 7-6 (6), 5-7, 5-7, 7-6 (7) and advancing to the third round of the Australian Open on Thursday. Nishikori, who dropped to his knees after hitting a service winner on match point, led 4-1 in the final-set 10-point tiebreaker but allowed Karlovic to edge ahead 7-6 before closing out the match.