The two-time defending champ eventually asserts himself in the last set to pick up a 7-5, 6-7 (5), 7-5, 2-6, 6-1 victory amid record-breaking Day 1 heat at the oldest Grand Slam tournament.

Alcaraz hopes to become the first player on the men's tour since Bjorn Borg to complete the French Open-Wimbledon double in consecutive years. Alcaraz is only the third defending Wimbledon champion all-time to be taken to five sets in the first round of the following year's Grand Slam.

Defending champion Alcaraz was erratic and inconsistent against inspired Italian Fognini, but eventually triumphed in an enthralling first match of the tournament on Centre Court