Andy Roddick faces Novak Djokovic in the last eight of the Cincinnati Masters later today.

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Roddick survived a tense late night battle against Robin Soderling to reach the quarters. Roddick led by a set and a break but let Soderling back into the match before eventually winning 6-4, 6-7, 7-6.

Roddick revealed afterwards that he had not expected anything of himself this week after just coming back from a bout of mono and he was delighted to beat the world number five.

Djokovic is aiming to complete his set of the North American Masters 1000 titles this week. He has won Indian Wells, Miami and the Rogers Cup in the past but Cincinnati remains elusive though he has made the final for the past two years.

He eventually overcame a battling David Nalbandian 6-1, 7-6 in a fascinating third round tussle. Djokovic gave it everything, saving five set points in the second set.

Roddick leads 4-2 on the head-to-head and established a bit of a hold over Djokovic in 2009, winning all three of their matches. First of all Djokovic retired with heat exhaustion during their Aussie Open quarter-final and then Roddick won 6-3, 6-2 in Indian Wells and 6-4, 7-6 in Montreal.

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