Given a reference text about Taylor Fritz, tell me what country he's from and his best finish at a Grand Slam tournament?

Context: Taylor Harry Fritz is an American professional tennis player. He has a career-high singles ranking of world No. 5 by the Association of Tennis Professionals, achieved on February 27, 2023, and a doubles ranking of world No. 104, achieved on July 26, 2021. Fritz has won five ATP Tour singles titles, including a Masters 1000 title at the 2022 Indian Wells Masters. His best result in a Grand Slam tournament was reaching the quarterfinals of the 2022 Wimbledon Championships. He is currently the No. 1 American player.

Fritz reached his maiden ATP final in only his third career event, the 2016 Memphis Open. Only one other American, John Isner, has reached an ATP final in fewer career events. He won a junior major singles title at the 2015 US Open, and was the runner-up in junior singles at the 2015 French Open.

Answer: Taylor Fritz is from the United States and his best finish in a Grand Slam tournament was reaching the quarterfinals at Wimbledon in 2022.