SAN DIEGO — Edwin Jackson got off to a great start Sunday by retiring the first nine Colorado Rockies batters.

He couldn’t keep it going.

Charlie Blackmon homered leading off the fourth and then hit an RBI single in the fifth.

Jackson was long gone by the time Mark Reynolds homered leading off the 10th inning to give the Rockies a 3-2 victory and a split of a four-game series.

“I didn’t necessarily feel like I had my best stuff, as far as strength-wise,” Jackson said. “I think I could’ve went out there for another inning, but it’s a two-nothing game. We have guys on the bench trying to come out and produce runs. It’s a pitchers’ duel.”

Jackson allowed two runs and five hits in six innings, struck out four and walked one.

“I thought he was able to hold them down without having his sharpest stuff,” manager Andy Green said. “I think his mentality was right. I think his approach was right. Wasn’t his absolute best stuff, but he was still more than enough to navigate six innings very well.”

Reynolds’ homer was the 250th of his career and 13th of the season. It came on a 2-2 pitch from Kevin Quackenbush (7-6).

Jake McGee (2-3) pitched the ninth for the win. Adam Ottavino pitched the 10th for his fourth save in eight chances.

Blackmon gave the Rockies a 2-0 lead with his homer leading off the fourth and an RBI single with two outs in the fifth.

Nick Hundley hit a leadoff double in the fifth and scored on Blackmon’s single. Blackmon got caught in a rundown to end the inning.

Rockies right-hander Chad Bettis was cruising with a one-hit shutout before the Padres tied it at 2 in the sixth. Travis Jankowski doubled to left-center and scored on Wil Myers’ triple that rolled to the fence in right-center. Yangervis Solarte brought in Myers with a sacrifice fly.

Bettis went seven, allowing two runs and four hits, with five strikeouts and one walk.

UP NEXT

Rockies: LHP Tyler Anderson (5-5, 3.35) is scheduled to start the opener of a three-game series at Arizona that starts Monday night. Shelby Miller (2-11, 6.89) is scheduled to start for Arizona.

Padres: RHP Paul Clemens (2-5, 5.44) is scheduled to start the opener of a three-game series at San Francisco starting Monday night. The Giants are scheduled to counter with Jeff Samardzija (11-9, 4.00).