Earlier, Gwynn singled in the go-ahead run against his former team with two outs in the 11th inning and the Dodgers won 4-2 in a game that had been suspended at 1:40 a.m. local time after four rain delays totaling 3 hours, 36 minutes. The game took nearly 24 hours to complete.
"It was weird," said Broxton, who has five saves. "We got two wins out of it."
The suspended game resumed at 5:35 p.m. on a chilly but clear evening, and ended at 6:55 p.m.
Gwynn, the son of Padres Hall of Famer Tony Gwynn, entered during a double switch in the bottom of the ninth. With two on in the 11th, he hit a soft liner on a two-strike pitch from sidearmer Pat Neshek that dropped in front of right fielder Will Venable. That brought in Uribe, who was aboard on a leadoff double against Ernesto Frieri (0-1). Gwynn took second on the throw home.
Gwynn, who hit only .204 with the Padres last year, has thought plenty about getting big hits at Petco Park.
"I've envisioned it, but it definitely wasn't under the circumstances that we're in now," Gwynn said. "Nevertheless, I was blessed to have an opportunity to get up there and perform well."
Gwynn stayed hot, hitting a double to open the regularly scheduled game. He advanced on Casey Blake's sacrifice bunt and scored on Andre Ethier's single.
Ethier hit a first-pitch homer into the porch down the right-field line with two outs in the fifth, his first, for a 2-0 lead. Kemp followed with a single and scored when Denorfia misplayed Juan Uribe's fly to left. Gwynn singled leading off the eighth and scored on Blake's RBI single.
Ethier, Kemp and Carroll had three hits apiece.
Kuroda (2-0) was dominating until the seventh, when he still managed to get out of a bases-loaded jam. Until then, he allowed only a walk to Chris Denorfia in the second and a single to Orlando Hudson in the fourth.
Hudson was doubled off by center fielder Matt Kemp trying to take second on Brad Hawpe's fly ball.
Kuroda, who gave up six hits, retired the first two batters in the ninth before allowing singles to Hawpe and Chase Headley. Broxton came on and walked Denorfia to load the bases. The game ended when Headley was called out for interference for colliding with third baseman Blake, who was going for Cameron Maybin's dribbler between shortstop and third.
Kuroda struck out four and walked two.
"They used a lot of bullpen pitchers yesterday and today, so I wanted to throw all throughout nine innings, but it turned out I had to have Broxton pitch again there, so I kind of feel sorry for him," Kuroda said through an interpreter.
Kuroda said it was difficult preparing because with the suspended game needing to be finished, he didn't know when the regularly scheduled game would begin.
"The most important thing was I was able to contribute to the win," he said.
Dustin Moseley (0-2) allowed three runs, two earned, and eight hits in six innings for San Diego. He walked three and struck out one.
"They've got a good team," Hudson said. "They've got good pitching - they've got good everything."
Said Headley: "It's a tough day. Obviously we're a little tired from that fiasco from last night. You want to come out and get that first one. When that didn't happen, you've got to refocus and go after that second one. They just outplayed us today. That's what it came down to."
After the Padres traded for Maybin in November, Gwynn wasn't offered a contract to return. He signed as a free agent with the rival Dodgers.
"It's kind of nice, the fact he played here," Los Angeles manager Don Mattingly said. "You actually think about that a little bit. You don't put him in the spot to do it, but when he actually does it here, it's kind of nice."
The fans gave Gwynn a mixed reception when he was announced during the double switch.
"I expected that," he said. "When the Padres are playing against the Dodgers, it becomes more about the name on the front of the jersey than it does on the back. I wouldn't expect them to do anything different."
After Uribe doubled, James Loney popped up and pinch-hitter Aaron Miles reached when a breaking ball from Frieri hit him on the bill of his helmet. Frieri made way for Neshek, who struck out Rod Barajas to bring up Gwynn. After Gwynn's single, Miles scored on a wild pitch.
Gwynn "hit it off the end a little bit, but give him credit," Padres catcher Nick Hundley said. "He put the ball in play with two strikes off a tough guy, with tough shadows, tough to see."
Broxton pitched the 11th for the save. Blake Hawksworth (1-0) worked two scoreless innings for the win.
The game started Friday night and was suspended early Saturday with the score tied at 2 after Kemp singled off Heath Bell in the top of the ninth. When it resumed, Uribe grounded into a double play, and Loney and Xavier Paul singled before Barajas hit into a force to end the threat.
The Padres stranded 12 and the Dodgers 10.
- Padres manager Bud Black said LHP Clayton Richard, who pitched just one inning Friday night before a delay of 1 hour, 34 minutes, might pitch as early as Tuesday against Cincinnati. Tim Stauffer, who had been penciled in for Tuesday, might be pushed back to Wednesday afternoon against the Reds.