Sam Querrey continued his fine form in Houston by moving past Janko Tipsarevic and into the semi-finals of the tournament.
The American had to work for it, being required to save two set points in the first set and another in the second.
However, he showed his resilience by beating back the Serb’s challenge and registering a 7-6 (8-6), 7-6 (7-4) win.
“My first two matches were pretty clean, but this match was more about fighting your way through it,” Querrey said.
“There were some frustrating moments against a tough opponent, but I found a way to win those tie-breaks and that’s what tennis is about sometimes.”
Querrey will face Chilean Christian Garin for a place in the final after he overcame Swiss qualifier Henri Laaksonen 6-3, 6-2.
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