Harrison went 4-for-5 with a homer, two doubles, five runs scored and three RBIs to lead the Mesa Solar Sox to a wild 18-9 win over the Peoria Saguaros.
Acquired by the Pirates at the 2009 trade deadline from the Cubs, doubled twice and homered, Harrison collected 40 extra-base hits in 135 games for Double-A Altoona. The 23-year-old second baseman has seven in nine games for the Solar Sox (8-5).
"I just look for a good pitch to hit, and when I get it, take advantage of it," Harrison said. "You only get so many of those, and you can't control what happens after you make solid contact."
Harrison got off to a slow start in the desert after batting .300 with 75 RBIs for the Curve. After going 5-for-31 in his first six games, the Ohio native has begun to heat up in the past two, collecting seven hits. He attributed his recent surge to keeping it simple.
"Just staying within myself and not try to do too much," Harrison said. "Baseball is a long season, and at some point, it's got to turn around."
Fellow Pirates prospect Andrew Lambo was 3-for-6 with four RBIs, and Jeremy Moore (Angels) extended his hitting streak to 11 games with four hits, including a homer. The 23-year-old outfielder is batting .417 with 11 RBIs.
"It definitely means a lot, a guy like Jeremy Moore," Harrison said. "It's just one of those things everybody can build off. His momentum, it's an energy boost."
Phillies' Minor Leaguer David Zeid (2-0) was credited with the win, fanning four while allowing four runs on five hits over four innings. Nick Carr (Mets) pitched a perfect inning of relief for the Solar Sox.
Eduardo Escobar (White Sox) hit his AFL-best third homer, a two-run blast, and scored twice. Twins prospect Ben Revere picked up two hits and stole a pair of bases to move ahead of Moore for the league lead with seven.
White Sox farmhand Johnnie Lowe (0-2) absorbed the loss, giving up five runs on seven hits in 2 1/3 frames.
Robert Emrich is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.