SHANGHAI (AP) -- Shao-Xuan Zeng, a 396th-ranked wildcard from China, upset Dudi Sela of Israel 2-6, 6-1, 6-4 Sunday in the first round of the Shanghai Masters.
The 44th-ranked Sela appeared to be cruising to victory when he captured the first set by winning the last five games.
But he fell apart in the second set and then surrendered his serve in the opening game of the third. He pulled to 4-4 before losing the final two games of the match.
"I think that the crowd, their cheers are very helpful for me," Zeng said. "They're always cheering for me."
Zeng will next play fifth-seeded Jo-Wilfried Tsonga of France, who won the Japan Open in Tokyo on Sunday.
The top eight seeded players -- Rafael Nadal, Novak Djokovic, Juan Martin del Potro, Andy Roddick, Tsonga, Nikolay Davydenko, Fernando Verdasco, Gilles Simon -- all received first-round byes.
World No. 1 Roger Federer withdrew from the tournament with fatigue and No. 3 Andy Murray pulled out with a wrist injury.
Andreas Beck of Germany also advanced on Sunday when Jose Acasuso of Argentina retired with a knee injury while trailing 7-6 (2) 1-0.
"On one side, it was good for me because I only had one set to play," the 40th-ranked Beck said. "On the other side, it was not good to win like this when someone gets injured."
Feliciano Lopez, who has struggled to find form all year, moved into the second round with a 6-3, 6-4 win over fellow Spaniard Guillermo Garcia-Lopez.
"It's been a tough year for me," Lopez said. "I didn't win so many matches, so I have to be happy for being in the second round here."
Igor Kunitsyn defeated Igor Andreev 6-7 (6), 6-4, 6-2 in an all-Russian match.