Former World No. 9 Andrea Petkovic played her last Grand Slam match on Tuesday, losing to World No. 13 Belinda Bencic 2-6, 6-4, 4-6 in the first round of the US Open. Petkovic, 34, announced her plans to retire after the US Open. "I was glad that it ended like this, with Belinda, somebody I love and respect so much," Petkovic told reporters after the match. "Also that I could bring to the last match everything that I brought to my career, which was grit and tenacity and just respect for the game and for my opponents," she added.