But as has been the case all season, Petit delivered when he was called on in whatever situation. At times he has been the team's long reliever, required to eat up multiple innings. At times he has been used late in the game to pitch one inning and even once to matchup against one batter.
"He's like a swiss-army knife," second baseman Daniel Murphy said.
Petit recorded the second save of his career, but first traditional three-out save. His only other career save was of the three inning variety on May 8, 2015 against the Marlins when he was still with the Giants.
"I tried to treat the outing as my regular outing," Petit said through an interpreter. "I didn't focus on it being a save opportunity or not."
Petit now owns a 2.81 ERA in 17 appearances that have displayed the versatility that manager Dusty Baker enjoys.
"He's been our utility pitcher," Baker said. "He can do everything out there."
Jamal Collier covers the Nationals for MLB.com. Follow him on Twitter at @jamalcollier. This story was not subject to the approval of Major League Baseball or its clubs.