Story capped a rainy afternoon when he drove a 2-2 cutter from Nick Vincent (3-2)434 feet into the right-center field seats, touching off the celebratory fireworks. It was the 20th homer of the season for the All-Star shortstop and his first career game-ending homer.
Before the dramatic finish, both teams encountered difficulties with the wet grounds as the game was played in a steady rain.
Scott Oberg (4-0) recorded the final four outs, ending the top of the ninth with a strikeout of Gordon. Oberg entered after Bryan Shaw put two on in the eighth.
The Rockies tied the game when Arenado singled by the diving attempt of first baseman Ryon Healy to right field. DJ LeMahieu scored the first run and Charlie Blackmon scored the tying run when Haniger bobbled the wet ball.
Seattle regained the lead when Gordon singled to left field with two outs in the seventh against Jake McGee. Guillermo Heredia scored as left fielder Gerardo Parra struggled to grip the ball due to the wet conditions, and his throw was off target.
The Rockies tied the game for the second time when Ian Desmond tripled down the right field line and scored on Ianetta's fly ball that turned Span around before he secured the catch in front of the left field warning track.
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)