Height has been a major issue in professional tennis for a long time, and it is a particular problem on the men’s tour, where big serves can win matches. Tall players have long used their physicality to challenge opponents, from Ivo Karlovic’s unparalleled ace records to Reilly Opelka’s contemporary reign. This article takes a look at the five tallest tennis players, their careers, accomplishments, playing styles and lasting impact on the sport.