John Isner defeated Adrian Mannarino 6-3, 6-4, 6-3 at the Mexican Open in Acapulco, Mexico. John Isner won the first set convincingly, but Adrian Mannarino fought back to win the second set tying the match at two sets apiece. In the third set, John Isner was able to take control and win the set 6-3 to win the match 2-1. John Isner is attempting to become just the second American-male born tennis player to win the Mexican Open. The other one being Sam Querreyin 2017.