Ivo Karlović

Ivo Karlović, born on 28 February 1979, is a Croatian former professional tennis player. His height of 211 cm makes him the joint-tallest ranked tennis player in history, along with Reilly Opelka. He won eight ATP Tour singles titles between 2007 and 2016. He was a serve-and-volleyer and officially held the record for the fastest serve recorded in professional tennis, measured at 251 km/h, until John Isner surpassed it in 2016. He was considered one of the best servers on tour and held the record for career aces from 1991 onwards with 13,728, not counting Davis Cup, until Isner broke it on 1 July 2022. His height let him serve with high speed and a unique trajectory.