Tomas Berdych takes on Janko Tipsarevic in the first of Sunday's reverse singles as the Czech Republic take on Serbia in the Davis Cup.
On Friday Tipsarevic was involved in a pulsating five setter with Radek Stepanek which he claimed 9-7 in the fifth set and this one could go a very similar way. The fate of the tie is at stake and Berdych and Tipsarevic have had their fair share of battles over the years.
It's world number eight Tipsarevic who has the edge, leading the Czech world number seven 4-2 on the head-to-head. Tipsarevic won their first four matches, crucially beating Berdych 7-5, 6-2, 2-6, 7-6(5) in the Davis Cup semis two years ago and if Berdych can secure revenge today and thus book a place in the last four for the Czechs, it would be the sweetest of revenge.
The evidence from the end of last season suggests that Berdych finally has developed a handle on Tipsarevic's game. He stopped the rot against his nemesis with a 7-5, 6-4 win in Shanghai and then edged a desperately tight encounter 2-6, 6-3, 7-6(6) at the ATP World Tour Finals.
While Berdych had a much easier time on Friday as he destroyed Viktor Troicki in straight sets he hasn't enjoyed the benefit of a day's rest unlike Tipsarevic. He combined with Stepanek to win Saturday's doubles 6-4, 6-2, 7-6(4) against Ilja Bozoljac and Nenad Zimonjic.
Prediction: Berdych in five.