Net Worth Over Time
Net Worth Timeline
2007$0.1MC
Professional Debut
John Isner begins his professional tennis career.
2010$1M+900%B
Wimbledon Marathon Match
Plays the longest tennis match in history at Wimbledon, gaining global attention and boosting his profile.
2018$6M+500%B
Miami Open Victory
Wins his first Masters 1000 title at the Miami Open, increasing his earnings and endorsement opportunities.
2018$7M+17%B
Wimbledon Semifinal
Reaches the semifinals at Wimbledon, further solidifying his status as a top player.
2023$13M+86%B
Retires from Tennis
Retires from professional tennis with considerable wealth accumulated.
2026$14M+8%B
Post-Tennis Life
Enjoys retirement, possibly with commentary or business ventures, maintaining net worth.
Last updated: February 24, 2026