Pettibone, the Phillies fourth rated prospect according to Baseball America, allowed just two hits over seven shutout innings as the IronPigs blanked the Syracuse Chiefs, 6-0, Friday night in front of a sellout crowd at Coca-Cola Park.
The 22-year-old right hander escaped a bases loaded jam in the first inning before cruising through his final six frames inducing one groundball out after another. When it was all said and done, Pettibone retired 14 Chiefs hitters via the groundball.
After the first inning, the Phillies 2008 third-round pick allowed just four base runners of which only one reached scoring position as he earned his second career Triple-A win.
Pettibone's battery mate and the third ranked prospect in the Phillies system, Sebastian Valle it a three-run home run in the sixth inning to extend the IronPigs lead to 6-0 and put the game out of reach.
Valle, who struck out in five of his previous six at-bats turned around a 3-2 offering from Chiefs starter Tanner Roark and deposited his second Triple-A home run into the bullpens in left. The IronPigs catcher finished 1-for-3 with four RBI and a run scored.
The IronPigs (65-56) got all the offense they would need for Pettibone in the fourth, scoring three unearned runs of Roark thanks to a dropped ball by shortstop Zach Walters.
Roark, who came in red-hot allowing just three earned runs in his last 21 innings pitched, suffered his league-worst 14th defeat yielding all six runs on eight hits in six innings pitched.
Joe Savery and Tyson Brummett worked the final two frames behind Pettibone to complete the IronPigs ninth shutout of the season but just the second since May 22.
Pettibone was 9-7 with a 3.30 ERA in 19 GS with Reading this season before being promoted to Lehigh Valley on July 30. The 6-5, 200-pounder made his Triple-A debut that night vs. this Syracuse team allowing two runs on five hits in five innings.
Steve Susdorf and Pete Orr each picked up two hits apiece for Lehigh Valley.
Both the Scranton/Wilkes-Barre Yankees and Pawtucket Red Sox were victorious Friday meaning the IronPigs stay 2.0 games behind the Yankees for the division lead and 1.5 games back of the Paw Sox in the Wild Card chase.
The IronPigs and Chiefs wrap up their two-game series on Saturday at 6:35 p.m. from Coca-Cola Park. LHP Tom Cochran (6-4, 4.58) will get the start for Lehigh Valley opposite International League wins leader LHP Zach Duke (12-5, 3.81).