TIANJIN, China (AP) — U.S. Open champion Flavia Pennetta lost in the first round of the Tianjin Open on Tuesday, hurting her chances of qualifying for the WTA Finals in Singapore. Pennetta is currently in the eighth and final spot to qualify for the WTA Finals, but only has a 20-point lead over Timea Bacsinszky, with several other players behind her still in contention.