Young hit an RBI single with two outs in the 13th inning to lift Philadelphia to a 2-1 victory over the Chicago White Sox, giving the Phillies a split of a day-night doubleheader Saturday.
John Mayberry Jr. hit a tying, solo homer in the seventh off Hector Santiago, and All-Star Domonic Brown threw out Jeff Keppinger trying to score from second on Tyler Flowers' single to left to end the top half of the 11th.
Simon Castro (0-1) walked Humberto Quintero leading off the bottom of the 13th and Jimmy Rollins then reached on a fielder's choice. He advanced on Joe Savery's sacrifice and scored on Young's hit to right, sliding headfirst just ahead of Casper Wells' strong throw to the plate.
Alexei Ramirez hit a tiebreaking double in the 11th inning to help Chicago win the opener 5-4.
Young wouldn't let the teams get to 25 innings in a day. He ripped a 1-1 fastball the opposite way and watched Rollins make the most of his speed.
"It was really a long day," Young said. "I was fortunate enough to get a hit and Jimmy took care of the rest."
It was a costly loss earlier for Philadelphia because center fielder Ben Revere broke his right foot on a foul ball before grounding into a double play to end the game. Revere was hitting .305.
"It's tough," manager Charlie Manuel said. "I couldn't believe it."
After a 41-minute rain delay following the top of the ninth in Game 1, White Sox righty Nate Jones escaped a no-out, second-and-third jam in the bottom half. Ramon Troncoso (1-2) then left the winning run on third in the 10th to earn the win.
Santiago had allowed just two hits before Mayberry connected with two outs in the seventh to tie it. Santiago allowed one run and three hits, striking out nine in 7 1-3 innings.
Phillies starter John Lannan threw eight strong innings, allowing one run and four hits.
White Sox catcher Josh Phegley finished the second game at second base after Gordon Beckham left with a left quad contusion following a collision with right fielder Wells.
Savery (2-0) pitched a scoreless 13th to win the nightcap.
"Our bullpen did their job," Manuel said. "We salvaged a split."
The teams were forced to play two after Friday night's interleague game was rained out. Both games Saturday took 3 hours, 53 minutes, excluding the delay in the opener.
"The last few innings, guys were hanging by the skin of their teeth," White Sox manager Robin Ventura said after Game 1. "It wasn't pretty, but it worked out."
Beckham's sacrifice fly in the fifth inning put the White Sox up 1-0 in the nightcap.
In the first game, Alejandro De Aza hit a two-out triple off J.C. Ramirez (0-1) in the 11th and Alexei Ramirez followed with a liner to right-center for his fourth hit. He then scored when shortstop Rollins booted Alex Rios' grounder for an error.
"Ramirez has been swinging the ball well, being aggressive," Ventura said.
The Phillies fell to 3-10 when they have a chance to move to .500. They won consecutive series over first-place Pittsburgh and Atlanta, and took three of four from defending NL East champion Washington.
But the inability to hit a sacrifice fly cost Philadelphia against the White Sox, who entered with the third-worst record in the majors.
"We had some golden chances," Manuel said. "All we had to do was hit the ball and couldn't do it. The game was sitting there for us."
Jones balked runners to second and third in the ninth before retiring Carlos Ruiz on a shallow fly, striking out pinch-hitter Laynce Nix and getting Revere on a hard liner to right.
The Phillies had runners on first and third with one out in the 10th, but Troncoso fanned Delmon Young and Kevin Frandsen grounded out.
"We just needed to hit a ball somewhere, make a fielder move," Manuel said. "Just needed to make contact."
Addison Reed pitched the 11th for his 24th save in 28 tries. He allowed an RBI single to pinch-hitter Quintero.
Rookie Jonathan Pettibone allowed three runs and six hits, striking out six in six innings. The Phillies fell to 10-6 in Pettibone's starts.
White Sox starter John Danks gave up three runs and eight hits in 6 1-3 innings.
"I think I'm on the right track now," Danks said. "I'll be disappointed if it doesn't go right."
Darin Ruf drove one out to straightaway center to tie it at 3 in the seventh. Ruf hit 41 homers last season, including 38 at Double-A and three for the Phillies.
NOTES: Plate umpire Brian O'Nora left the game after the top of the 10th inning. There was no immediate word on the cause. ... This is the fourth-ever series between the teams and first since the Phillies swept a three-game set in June 2007. ... Revere extended his hitting streak to 10 games. ... Cole Hamels (4-11, 4.17) goes for his third straight win in the series finale Sunday afternoon against Chicago's Jose Quintana (4-2, 3.67).