Despite most tour wins this year, Zverev is still a Slam underachiever

A. Zverev's 2018 Majors: Australian Open- 3rd Rd. ROLAND-GARROS- Quarterfinal Wimbledon- 3rd Rd. U.S. Open- 3rd. Rd.

The 21-year-old reached his first Grand Slam quarterfinal at the French Open this year.