Two days after his best outing of the season, CC Sabathia landed on the disabled list.

The 35-year-old lefthander, 2-2 with a 3.81 ERA in five starts, was placed on the 15-day DL with a left groin strain suffered during Wednesday night’s start, in which he shut out the Orioles for seven innings.

“In the fourth inning, he felt it,” Joe Girardi said. “Did not tell us until after the start. He kind of wanted to see how he felt the next day. We thought it would be a good idea to get an MRI to make sure, and lo and behold, he’s got a groin strain. I had no idea until after the game. He pitched so well, you would have never known.”

Girardi said he expects Sabathia to miss at least three weeks and added that Ivan Nova, who lost the fifth-starter battle to Sabathia during spring training, will join the rotation. He said Nova, who has a 5.14 ERA in six relief appearances, probably will be able to throw about 75 pitches in his first start.

Sabathia was one of the few bright spots for the Yankees on their recent 2-7 trip. Wednesday night’s outing, his longest of the season, led the Yankees to a 7-0 victory that snapped a six-game losing streak.

Lefty reliever Phil Coke, a 26th-round draft pick of the Yankees in 2002 who pitched for them in the big leagues in 2008-09 before being traded in the three-team deal that netted Curtis Granderson, was called up from Triple-A Scranton/Wilkes-Barre.

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Coke signed a minor-league deal with the Yankees on April 25 out of the Atlantic League.

“It’s home, man,” said Coke, 33. “I grew up in this organization. I was able to see the old ballpark before they tore it down and was able to help break this one in correctly [with a World Series title in 2009]. Now I’m back to finish some unfinished business.”