After losing in the third round at Wimbledon , Bencic could be one of the youngest semifinalists ever .
Bencic was born in 1997 and is playing in her first U.S. Open .
After losing in the third round at Wimbledon , Bencic could be Bencic of the youngest semifinalists ever .
Bencic was born in 1997 and is playing in her first U.S. Open .