John Isner and Michael Mmoh have met 1 time; Mmoh leads 1–0. Most recently Mmoh won 3-6, 4-6, 7-6(3), 6-4, 7-6(7) in the second round at U.S. Open - New York on August 31, 2023. By surface: hard 0–1. Isner is ranked No. 332, Mmoh No. 148.

Every meeting

From the match records held by our data provider, main tour, Challenger and ITF levels included. Walkovers are not counted as meetings.