World number six Stefanos Tsitsipas struggled late but advanced to the ATP Washington Open quarter-finals on Thursday by defeating Australia's Jordan Thompson 6-3, 7-6 (7/4).
The 20-year-old Greek top seed took the only break of the match to claim the first set and after some tense moments won the tie-breaker when Thompson netted a forehand after 99 minutes at the US Open hardcourt tune-up event.
"It was kind of tricky at the end," Tsitsipas said. "I kept doing silly mistakes in the tie-breaker. I was not happy about it. I made a lot of unforced errors.
"I played great to get break points, then I started thinking about it. I didn't identify the right occasion to come to the net. Just a little lost."
"I believe I can handle those situations more mature in my next matches."
"He has a big backhand. His serve can be dangerous. I'll have to be careful. He's very unpredictable."
- Two lucky losers win -
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"I still think I can improve many things and that's why every day I come to the court."
- Doubles duty for Murray -
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