Japan's Kei Nishikori takes on the fearsome serve of Juan Martin Del Potro when they meet in the Olympic quarter-finals on Thursday.
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Nishikori will be looking to avenge his third round defeat to Del Potro at Wimbledon last month. The Japanese star has enjoyed success against other power players in the past, defeating Jo-Wilfried Tsonga at the Australian Open but he's yet to develop a strategy to counter the relentless ball bashing of the Argentine, losing all three of their career matches in straight sets.
Del Potro will be confident of a repeat of his 6-3, 7-6(3), 6-1 victory and he'll be relieved he's facing Nishikori and not fourth seed David Ferrer, the man who ended his 2012 Wimbledon campaign.
Nishikori thrilled his sizeable fanbase back home with a brilliant 6-0, 3-6, 6-4 win over the Spaniard in a match which had to be moved to Centre Court after rain stopped play deep in the third set. On the resumption, Nishikori pounced immediately, breaking Ferrer to 15 to clinch the match.
However he'll need very different tactics against Del Potro. He'll have to serve and return especially well, something Gilles Simon managed for a set against the Argentine before going down 6-1, 4-6, 6-3.
Prediction: Del Potro in two.