The Padres beat the White Sox 4-2 on Sunday, getting to 90 wins for just the fifth season in franchise history.

They did it in front of an often-frenzied crowd announced at 45,197 at Petco Park, which vaulted them to a new record for season attendance.

And then everyone went home.

The plan, had it been necessary, was for Padres players and staff to hang out in the clubhouse and watch the Mets and Phillies game on TV, as losses by the Braves and Mets Sunday would have sparked a celebration.

The Braves closing out their 5-4 victory over the Marlins shortly after the Padres and White Sox began playing meant the carpet cleaners would not be needed.

The Padres will bus to Los Angeles on Monday, where they can clinch a playoff berth with a victory on Tuesday.

They went about getting themselves to the precipice of their third playoff appearance in five years (and pushing the White Sox to the edge of infamy) by coming back to tie the game twice and winning with three runs in the eighth inning.

Those runs scored before an out was made — on back-to-back doubles by Donovan Solano and pinch-hitter Luis Arraez, a sacrifice fly by Jurickson Profar and Fernando Tatis Jr.’s home run.

Just before the Padres came back, the Diamondbacks gave up a big lead in Milwaukee and lost to the Brewers. So the Padres’ lead in the race for the National League’s top wild-card spot (and a home series to start  the postseason should they win it) increased to three games.

The White Sox, whose 120th loss of the season tied an MLB record held the past six-plus decades by the 1962 Mets, had taken leads of led 1-0 and 2-1 with solo homers off Yu Darvish.

Darvish allowed just one other hit and struck out nine in 6⅓ innings, and Adrián Morejón, Jeremiah Estrada and Robert Suarez worked a scoreless inning apiece.

Profar’s solo homer in the third inning had tied the game 1-1.