Daniel Descalso hit his first career grand slam and had a career-high five RBIs, and Adam Wainwright won for the first time at Petco Park as the St. Louis Cardinals beat the San Diego Padres 10-2 Tuesday night.

SAN DIEGO, CA - MAY 21: Daniel Descalso #33 of the St. Louis Cardinals watches the flight of his grand slam as John Baker #8 of the San Diego Padres looks on during the eighth inning of a baseball game at Petco Park on May 21, 2013 in San Diego, California. (Photo by Denis Poroy/Getty Images)
Denis Poroy, Getty Images
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Descalso lined a 1-2 pitch from Anthony Bass into the Jack Daniel's Old No. 7 Deck in right-center with one out in the eighth, his second homer of the season. Jon Jay was intentionally walked ahead of him.

Descalso, hitting just .197 coming in, went 3 for 3 with a walk and scored three runs.

Wainwright (6-3) held San Diego to one run and four hits in 7 1-3 innings, struck out six and walked one.

San Diego's Edinson Volquez (3-5) allowed five runs and eight hits in six innings, struck out five and walked one. He allowed four runs on six hits in the fifth.

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