Roy Halladay is arguably the most crucial piece to the Phillies’ success in 2013.

The former ace pitched made his second appearance in Grapefruit League action in Friday’s 10-5 win against the Yankees, throwing 2 1/3 innings. He gave up three hits, one earned run, walked one and struck out three. He threw 44 pitches, 26 for strikes.

His command seemed a little iffy for much of the outing. Halladay said it was his first time throwing curveballs this spring, one of which dribbled to the backstop on a wild pitch in the first inning.

“It shows he’s human when he lets one fly every now and then,” Phillies manager Charlie Manuel said. “One gets away from him. He’s all right. I like where Roy is at. Like we said, we’ll bring him up slowly, get him up to 100 (pitches) and he’ll be ready.”

Halladay also didn’t seem too bothered by the up-and-down performance. He said the biggest objective of Friday was to work on his curveball.

“At times, it did not feel comfortable in my hand. It’s a matter of throwing it more,” Halladay said. “I had thrown eight of them coming into today. So I just want to continue to throw it and get comfortable with it.”