Djokovic beat Thomas Berdych of the Czech Republic 7-5, 6-1 while the second-seeded Tsonga ousted fellow Frenchman Gael Monfils 6-0, 6-3.
The third-ranked Djokovic captured the first set with a bit of luck, as the Serb's shot tapped the net and fell over to his opponent's side. Berdych then double faulted to lose his first service game of the second set, while a backhand error saw him go down 5-1. Djokovic closed the game out with a volley on his second match point.
"I felt as if I woke up from the dream in the second set. I felt sleepy in the first set,'' Djokovic said. "But in the second set I broke him twice. He had bad service games and I took the opportunities.''
Tsonga benefited from a string of unforced errors by Monfils to race to a 4-0 lead. He faced a break point in the next game, but his powerful serve bailed him out to go up 5-0. Tsonga set up a set point with a forehand down the line and took the set after Monfils's forehand landed in the net.
Monfils hit an ace to level the second set at 1-1 but the more aggressive Tsonga broke again for a 4-2 lead with a passing shot. He sealed the victory with a service winner to wrap up the match in just 52 minutes.
"I hit the ball very well, but didn't move well today,'' Tsonga said. "I just hope to move better tomorrow.''
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