Australian Open Tennis

Andy Murray celebrates after defeating Matteo Berrettini in their first-round match at the Australian Open on Tuesday.

MELBOURNE, Australia — Metal hip, bloody knee and all, Andy Murray produced his biggest victory in years.

Murray built a huge lead, let it disappear completely, then needed to save a match point against Matteo Berrettini — who is nearly a full decade younger and ranked more than 50 places higher — before managing to pull out a 6-3, 6-3, 4-6, 6-7 (7), 7-6 (10-6) triumph across more than 4 1/2 epic hours on Tuesday in the Australian Open’s first round.

Australian Open Tennis

Novak Djokovic, left, is congratulated by Roberto Carballes Baena following their first-round match at Tuesday's Australian Open.