Cristiano Ronaldo marked his 600th league appearance with his 20th Serie A goal of the season as Juventus beat Spezia 3-0 on Tuesday to move within three points of second-placed AC Milan.

The Portuguese guided in his side’s third goal late on after Alvaro Morata and Federico Chiesa had struck earlier in the second half to put Andrea Pirlo’s side in a commanding position.

Ronaldo, who also hit the post with an effort in the first half, becomes the first player to score at least 20 goals in each of the last 12 seasons in Europe’s top five leagues.

The win leaves Juve third with 49 points from 24 games behind Milan on 52 and leaders Inter with 56, both of whom are in action this week against Udinese and Parma respectively.

The gap still leaves Juventus with work to do in their quest for a 10th consecutive league title.

“If we don’t win it at the end of the season we will congratulate the winners, but we must die on the pitch first, until we’re told that there are no more points left to play for,” Morata told Sky Italia.

“That’s what we must do, as long as we have a mathematical chance, we will fight until the end.”

Pirlo’s Juve side slipped up with a draw at mid-table Hellas Verona on Saturday and knew they could not afford any more mistakes having fallen 10 points behind league leaders Inter.

But they lost defender Matthijs De Ligt to injury in the warm-up and struggled in the opening period, coming closest when Ronaldo dribbled into the box and curled a shot off the foot of the post.

The double introduction of Morata and Federico Bernardeschi with half an hour remaining proved decisive, as the winger teed up the Spanish striker to score his first league goal since December within 60 seconds of coming on.

“Morata is a fundamental player for us; he knows how to work with the team, how to attack the space and score goals,” Pirlo said.

Juventus, meanwhile, have turned United States midfielder Weston McKennie’s loan from German club Schalke 04 into a permanent move.