San Diego Padres pitcher Edinson Volquez delivers during the first inning of a baseball game against the Pittsburgh Pirates in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

San Diego Padres' Alexi Amarista (5) is welcomed by Padres manager Bud Black after hitting a lead-off solo-home run off Pittsburgh Pirates pitcher James McDonald during a baseball game in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates' Starling Marte (6) is tagged out by San Diego Padres catcher John Baker while attempting to score from third on a fielder's choice by Pirates' Garrett Jones during the first inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

San Diego Padres' Alexi Amarista, right, rounds third to greetings from coach Glenn Hoffman (30) after hitting a lead-off solo-home run off Pittsburgh Pirates pitcher James McDonald during a baseball game in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

San Diego Padres pitcher Edinson Volquez delivers during the first inning of a baseball game against the Pittsburgh Pirates in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates' Travis Snider, left, is greeted by teammates James McDonald, top center, and Clint Barmes after hitting a three-run home run off San Diego Padres pitcher Edinson Volquez during the fourth inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates' Garrett Jones is greeted as he returns to the dugout after scoring on a two-run double by Pirates' Pedro Alvarez in the fourth inning of a baseball game against the San Diego Padres in Pittsburgh Friday, Aug. 10, 2012. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates starting pitcher James McDonald, right, and catcher Rod Barajas sit in the dugout during the fourth inning of a baseball game against the San Diego Padres in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8, with McDonald taking the loss. (AP Photo/Gene J. Puskar)

San Diego Padres' Chase Headley, right, celebrates with teammate Everth Cabrera (2) after hitting a two-run home run off Pittsburgh Pirates pitcher Tony Watson in the seventh inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

San Diego Padres' Chase Headley, top, celebrates with teammate Everth Cabrera (2) after hitting a two-run home run off Pittsburgh Pirates pitcher Tony Watson in the seventh inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates left fielder Starling Marte (6) watches as a two-run home run hit by San Diego Padres' Chase Heatley lands in the stands during the seventh inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

San Diego Padres' Chase Headley rounds third after hitting a two-run home run off Pittsburgh Pirates pitcher Tony Watson in the seventh inning of a baseball game in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

San Diego Padres pitcher Huston Street delivers in the ninth inning of a baseball game against the Pittsburgh Pirates in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

The Pittsburgh Pirates play a baseball game against the San Diego Padres as the sun sets on a crowd of baseball fans at PNC Park in Pittsburgh, Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)

Pittsburgh Pirates manager Clint Hurdle sits in the dugout before a baseball game against the San Diego Padres in Pittsburgh Friday, Aug. 10, 2012. The Padres won 9-8. (AP Photo/Gene J. Puskar)