When things aren’t going your way on the court, it’s important to mix things up; to find a way to make your opponent uncomfortable and off balance. Attempting four underhand serves in the same game is probably not the route you should take—unless your name is Alexander Bublik.

Down 3-0 in the first set, Bublik took the underhand serve to the next level against Tennys Sandgren. The 22-year-old Kazakh lost the first set 6-0, but it appears his tactic may have worked in the long run, as he went on to win the match over an extremely frustrated and disinterested Sandgren, 0-6, 6-3, 6-0.