Arenado completes cycle with game-winning homer for Rockies

Colorado Rockies' Nolan Arenado celebrates as his three-run, walkoff home run clears the fence off San Francisco Giants relief pitcher

Colorado Rockies' Nolan Arenado follows the flight of his three-run, home run of San Francisco Giants relief pitcher Mark Melancon in t

Colorado Rockies' Nolan Arenado follows through with his swing after connecting for a triple off San Francisco Giants starting pitcher

Colorado Rockies' Nolan Arenado, front, is doused by teammates Trevor Story, back left, and Ian Desmond after hitting a walkoff three-r

San Francisco Giants relief pitcher Mark Melancon follows the flight of a three-run, walkout home run that he gave up to Colorado Rocki

San Francisco Giants pinch-hitter Hunter Pence follows the flight of his two-run home run off Colorado Rockies relief pitcher Jake McGe

Colorado Rockies' Nolan Arenado, right, celebrates his three-run, walkoff home run with teammate Pat Valaika in the ninth inning of a b

Colorado Rockies' Nolan Arenado celebrates as he circles the bases after hitting a three-run, walkoff home run off San Francisco Giants

Colorado Rockies' Nolan Arenado slides safely into third base after hitting a triple off San Francisco Giants starting pitcher Ty Blach

Colorado Rockies starting pitcher Tyler Chatwood delivers a pitch to San Francisco Giants' Joe Panik in the first inning of a baseball

Colorado Rockies starting pitcher Tyler Chatwood delivers a pitch to San Francisco Giants' Joe Panik in the first inning of a baseball

San Francisco Giants' Brandon Crawford follows through with his swing after connecting for a two-run home run off Colorado Rockies star

DENVER (AP) — With one dramatic swing, Nolan Arenado gave the Colorado Rockies a thrilling victory and finished off his rare feat at the plate.

Arenado completed the cycle with a three-run homer in the bottom of the ninth inning, and the Rockies stunned the San Francisco Giants by rallying for a 7-5 win Sunday.

Arenado hit the first pitch he saw from All-Star closer Mark Melancon (1-2) into the left-field seats to cap a four-game sweep. The slugger was mobbed at home plate by teammates, with a frenzied sellout crowd chanting "MVP! MVP!"

"It's probably one of the best moments in my career," Arenado said. "I've hit some big homers but by far the best, obviously, for the cycle. I've never done it. I feel like I've been kind of close but I've always needed a triple and I ain't getting that. Today is a great day."

Arenado became only the fifth player in major league history to complete the cycle by hitting a game-ending home run. The last to accomplish it was teammate Carlos Gonzalez, who did it on July 31, 2010, against the Chicago Cubs, according to the Elias Sports Bureau.

"I remember watching Carlos do that," Arenado said. "Now I know how he feels."

With the best record in the National League, the surprising Rockies (46-26) have won five straight overall and nine in a row against the Giants. They are 20 games above .500 for the first time since 2009.

"The fans and the people of Denver are starting to get a hint that we're for real," Arenado said.

Colorado had a 3-2 lead in the top of the ninth but gave up three runs to trail 3-5 before scoring four in the bottom half.

Pinch-hitter Hunter Pence connected on a go-ahead homer for last-place San Francisco, which has dropped six consecutive games and nine of 11.

Melancon retired his first batter, but three singles produced a run and brought up Arenado, who tripled in the first, singled in the fourth and had an RBI double in the sixth. He hit a 91 mph fastball for his 15th homer and first career cycle.

"I was ready first pitch and I was just trying to get the ball to the outfield, really," Arenado said. "Luckily, I got a pitch middle-in and I was able to do some damage with it."

It was his second game-ending homer in the majors and the eighth cycle in club history.

Carlos Estevez (4-0), called up from the minors before the game, struck out one batter in the ninth for the win.

Trevor Story and Pat Valaika went deep in the seventh to give Colorado a 3-2 edge after Brandon Crawford's two-run homer in the fifth put the Giants ahead.

Rockies reliever Jake McGee came on in the ninth but issued a one-out walk to Gorkys Hernandez. Pence hit an 0-1 fastball into the left-center seats for his first career pinch-hit homer, and Crawford added an RBI single later in the inning.

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