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4/28/2014 1:10 A.M. ET

Yankees working to keep suspended Pineda sharp

NEW YORK -- With Michael Pineda suspended for 10 games following his ejection for having pine tar on his neck in Wednesday's game against Boston, the challenge for the Yankees is keeping Pineda sharp until he can be slotted back into the rotation.

Manager Joe Girardi said Pineda threw a bullpen session Sunday, and will throw a simulated game on Tuesday so that the right-hander can face live hitters.

"We're trying to take every precaution to keep him sharp," Girardi said.

Home-plate umpire Gerry Davis ejected Pineda in the second inning on Wednesday after finding a brown substance on Pineda's neck. Following the game, Pineda admitted it was pine tar. On Thursday, Major League Baseball suspended Pineda for 10 games.

Pineda, whom the Yankees acquired in a trade with Seattle in January 2012, was having a strong start to a critical season for both him and the team. Through four starts, he was 2-2 with a 1.83 ERA, three walks and 15 strikeouts over 19 2/3 innings.

Girardi said Pineda will likely threw another bullpen session on Friday.

"And then he'll be ready to go on Monday, "Girardi said, "like he's getting an extra day's rest."

Sore foot keeps Gardner from starting lineup

NEW YORK -- Brett Gardner's left foot was still sore a day after getting hit by Angels reliever Ernesto Frieri in the eighth inning of Saturday's game.

Gardner underwent an X-ray after the Yankees' 4-3 win over Los Angeles, and it came back negative. Before Sunday's game, New York manager Joe Girardi said Gardner told him his foot was feeling better despite the lingering soreness.

The speedy outfielder continued to undergo pregame treatment, and Girardi said that if he came through it OK, he could be available to play at some point in the Yankees' series finale.

But the preference is to avoid using him.

"If you could, you would like to," Girardi said. "I've got to see if he's available after a couple hours."

New York is off on Monday, potentially giving Gardner two full days of rest.

Gardner entered Sunday hitting .272, with eight RBIs and six stolen bases through 23 games.

Ichiro Suzuki started in left field and batted ninth for the Yankees on Sunday.

Solarte scratched late with sore shoulder

NEW YORK -- Yankees infielder Yangervis Solarte was scratched from Sunday night's lineup with a sore right shoulder.

Solarte was slated to hit eighth and play second base in New York's series finale against the Angels. Brian Roberts got the start in his place.

After the game, manager Joe Girardi said Solarte jammed his shoulder diving for a ball in Friday's game. Solarte didn't play Saturday. After watching Solarte take batting practice Sunday, Girardi could tell he wasn't 100 percent and "didn't look the same swinging."

That's when Girardi decided to remove him from the lineup.

"He had a test done, and the test came back good," Girardi said. "There's no damage to his shoulder. He just jammed it a little bit and we've got to get through it."

Girardi said not playing Sunday and having the off-day Monday could be all the rest Solarte's shoulder needs.

After signing with the Yankees as a free agent in January, Solarte earned a spot on the Major League roster at the start of the season. Through 21 games, the 26-year-old is hitting .301 with one home run, 13 RBIs and a .400 on-base percentage.

Bombers bits

• Infielder Brendan Ryan played in a rehab game with Class A Advanced Tampa on Sunday, going 2-for-5 with an RBI. The shortstop has been on the disabled list since Spring Training with a cervical spinal nerve injury.

Chris Iseman is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.