Hewitt, seeded eighth, put an end to French qualifier Edouard Roger-Vasselin’s excellent run with a 6-4, 6-0 victory.
In the last match of the day, fourth seed Gael Monfils of France defeated Beijing Olympic doubles gold medalist Stanislas Wawrinka of Switzerland 2-6, 6-3, 6-4 to earn a place against Tsonga.
Gulbis, who eliminated sixth seed Radek Stepanek of the Czech Republic on his way to the quarter-finals, hit a double fault on Tsonga’s set point to tie the match at one-set all.
But he failed to secure a break opportunity in the final set, with Tsonga firing 19 aces, eight of them in the third set.
“I tried to [maintain] focus on my game, not on his serve, because it’s very difficult when he served like that. He served just unbelievably today in the first two sets,” said Tsonga, ranked seventh.
“I had a break at the end of the second set, but it was a surprise for me, because I didn’t have one chance in the other games,” Tsonga said.
It was a shock defeat for Berdych, who furiously smashed his racket on the court before walking off.
“All our matches were really close,” said Youzhny. “In Munich it was much closer, it was in the final-set tie-break, and I lost six points in a row. I thought about it when I was going to serve [for the match] at 5-4. I played not so bad on the first three points for 30-10 and then he played aggressive. And at 6-5 [for Berdych], he got a set point, but I hit a good backhand down the line.”
Roger-Vasselin, who shocked US Open champion Juan Martin del Potro of Argentina and Jurgen Melzer of Austria on his way to the quarter-finals, double-faulted on a break point to go down 1-2.
It was Hewitt’s turn to hit a double fault on a break point in the sixth game, taking the game to 3-3.
Roger-Vasselin secured the following game, but he never got another break point chance as the Australian former world No. 1 stepped up his serve and took the last nine games.
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