DENVER (AP) -- Justin Morneau hit a two-run homer in the 10th inning and the Colorado Rockies turned the third triple play in team history as they beat the San Diego Padres 8-6 on Sunday.
After Carlos Gonzalez singled earlier in the inning, Morneau lined a 3-2 fastball from Dale Thayer (2-2) to straightaway center. The first baseman rounded the bases to the applause from the crowd and flipped his helmet off after passing third. He was mobbed at home by his teammates.
It was the second walkoff homer for Colorado this season.
Nick Masset (1-0) pitched a perfect 10th for his first win with Colorado. LaTroy Hawkins blew his first save of the season in the ninth as he surrendered a tying two-run homer to Everth Cabrera.
Corey Dickerson had a two-run homer and Troy Tulowitzki added a solo shot in the fifth to keep up his hot hitting at Coors Field, where he's batting .571 in 18 games.
The triple play in the third was Colorado's first since Tulowitzki turned an unassisted one on April 29, 2007, against Atlanta.
Seth Smith and Rene Rivera hit solo homers for the Padres, who return home following a 3-3 road excursion.
After Adam Ottavino pitched a perfect eighth, Hawkins gave up a leadoff double in the ninth to Will Venable. Cabrera soon followed with a two-run homer.
Juan Nicasio didn't have his best stuff, but was bailed out all afternoon by his defense, no more so than in the third. With runners on first and second, third baseman Nolan Arenado fielded a grounder by Carlos Quentin and stepped on the bag. He threw to second baseman D.J. LeMahieu, who relayed the ball on to first for the triple play.
Quentin was originally ruled safe at first, but the second base umpire called Smith for baserunner interference as he slid into second.
The momentum from that play ignited the offense as the Rockies scored four runs in the bottom of the frame. Blackmon had a two-run single and Dickerson added a two-run homer.
Usually a reliever, Donn Roach made his first major league start as he filled in for Andrew Cashner, who went on the 15-day disabled list because of soreness in his pitching elbow.
Roach was on a pitch count and out of the game early, giving up four runs in three innings.
Manager Bud Black elected to bat Roach eighth in the order and third baseman Alexi Amarista ninth, just to give the team more double-switch flexibility early in the game.
It worked, too, when Roach was lifted for Venable in the fourth, with Venable hitting an RBI single to make it a 4-3 game.
Roach couldn't find his rhythm in the first as he walked leadoff batter Charlie Blackmon and then Corey Dickerson.
It didn't matter, though, as both were thrown out trying to steal second -- with a little assistance from replay.
Blackmon was originally called safe on his steal attempt, but Black requested an appeal and the umpires overturned the call.
After Dickerson walked, he tried to steal and, like Blackmon, was called safe when the tag was high. Black jogged out of the dugout to appeal, with the umpires again reversing the call.
Tulowitzki then flew out to left to end the inning.
NOTES: The last time San Diego hit into a triple play was April 15, 2012, at Los Angeles against the Dodgers. ... The Padres are 6 of 7 on challenges. ... Both teams are off Monday. ... Before the game, Colorado activated C Wilin Rosario (viral infection) and optioned C Mike McKenry to Triple-A Colorado Springs.
