Fernando Tatis Jr. belted a grand slam and the San Diego Padres kept their hopes of hosting a wild-card series alive with a 7-4 win over the visiting Arizona Diamondbacks on Friday.

The Padres (88-72) are two games behind the Chicago Cubs (90-70) with two games left. San Diego has to sweep Arizona and hope the Cubs lose twice to the St. Louis Cardinals this weekend or else the Padres will have to play the wild-card round in Chicago.

Tatis unloaded in the bottom of the fourth on a 3-2 fastball from Zac Gallen, drilling the pitch into the second deck in left for his 24th homer of the year. The blast capped a five-run inning that included an RBI single from Ryan O'Hearn.

San Diego starter Yu Darvish (5-5) lasted five innings, permitting six hits and two runs with two walks and four strikeo

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