- Who
- Trenton Hayward
- What
- 1,658 total number
- Where
- United States (Flagstaff)
- When
The most successful tennis serves in one hour is 1,658, and was achieved by Trenton Hayward (USA) in Flagstaff, Arizona, USA, on 26 May 2019.
Trenton is a former professional player, who has played tennis for more than 25 years.