Tim Henman was denied his chance to finish off Dominik Hrbaty as heavy rain forced their US Open quarter-final to be suspended at 6-1 7-5 4-5.
The Briton left Hrbaty baffled in the opening set with a combination of deft shots and powerful groundstrokes.
Henman stayed focused in the second, saving three set-points before breaking in the 11th game and holding his serve.
The pair traded breaks in the third set but it was the Slovak who was 5-4 up before heavy rain washed out the match.
Henman began the match in devastating form, oozing confidence as he delivered an array of shots and solid serves.
The 30-year-old stormed to a 5-0 lead and a floundering Hrbaty had to wait until the sixth game to open his account.
Henman cruised to the opening set and piled the pressure on the 22nd seed in the first game of the second.
But Hrbaty staved off four break points and finally found his composure as a closely-fought set stayed on serve.
The Slovak carved out his first break chance of the match in the 10th game, forcing a resolute Henman to save three set points.
The fifth seed then advanced to the net in the following game and whipped a forehand down the net to break Hrbaty and steal a 2-0 lead.
Henman continued to impress, cleverly disguising his shots to steal a break to go 2-1 up in the third.
Hrbaty responded, forcing the Briton to claw back the points on his service game with some solid strokes from the baseline.
The Slovak waited until the eighth for Henman's focus to slip and broke back as a lucky bounce off the net cord handed him his first break of the match.
Henman regrouped to take Hrbaty to 0-30 but the 22nd raised his game, holding before heavy rain streamed onto the Grandstand court to leave the third set poised at 5-4 in his favour.