Stan Wawrinka says he is happy with his season—one where he won his third Grand Slam—even though he has not been at the top of his game since the victory.
Wawrinka is 7-6 since lifting the title in Flushing Meadows, including a 1-2 record at the ATP World Tour Finals, a run which has dropped him from a career-high No. 3 to No. 4 in the rankings .
"I think after the U.S. Open, things were tough. There's many things I can improve. But if I look in general, the season was amazing for me. I won a Grand Slam, plus finished in the Top 5. I won in my home in Geneva, which was really important for me," he told press in London.
He also mentioned that a knee injury has been hampering his performance.
Wawrinka has won four titles this season, including Chennai and Dubai, but has also lost his first or second match in nine events. He is 46-18 for the season.
The 31-year-old said his goal next season is to do better in ATP 1000 Masters events, and having only won his first Grand Slam at 28, he doesn't want his age to slow him down either.
"I'm always trying to improve, always trying to be at my top, trying to push the limit," he said.
Andy Murray and Kei Nishikori both scored wins against Wawrinka in the ATP World Tour Finals.