Melo/Kubot Advance In Melbourne
The World No.1 pairing, who had not dropped a set heading into their third-round encounter, found themselves a set down and points from defeat, entering a second set tie-break. The Polish-Brazilian duo produced their best level at the most crucial moment to force a decider, before sealing their place in the last eight after two hours and 12 minutes with a single break of serve and a hold to love in their final service game.
The Sydney International champions, unbeaten in 2018, will face Ben Mclachlan and Jan-Lennard Struff for a place in the final four after the Japanese-German team defeated a second all-Spanish pairing in as many rounds to reach the quarter-finals.
Mclachlan and Struff, competing for the first time together, backed up their upset of ninth seeds Feliciano Lopez and Marc Lopez with a 6-4, 7-6(5) win over Pablo Carreno Busta and Guillermo Garcia-Lopez. The third round clash featured just one break point, which was converted by Mclachlan and Struff in the first game of the match.
The two-hour, seven-minute contest featured four breaks of serve and saw Marach and Pavic hit 31 winners, converting their fourth break point in the final set before serving the match out to love in the following game. The seventh seeds will next meet Marcus Daniell and Dominic Inglot in the quarter-finals.
Unseeded duo Daniell and Inglot dispatched of Hans Podlipnik-Castillo and Andrei Vasilevski 6-4, 6-3 with an outstanding success rate behind their first and seconds serves (84 and 89 per cent). The 67-minute match was a story of breaks late in each set.