DUNEDIN, Fla. -- While Freddy Garcia left Wednesday's game against Toronto with a bruised right hand, the Yankees did receive some good news on the injury front.

Reliever David Robertson, who suffered a bone bruise on his right foot a week ago, ran on a treadmill for 30 minutes Wednesday and could be back on the mound as soon as this weekend, manager Joe Girardi said.

Robertson discarded his walking boot and crutches Monday and played catch, saying he'd easily be ready for Opening Day. But Girardi said he's been out long enough that, when he returns, he will have to start off by throwing a few bullpen sessions.

"If everything goes OK, maybe we'll get there," Girardi said.

In other injury news, Girardi said outfielder Nick Swisher left Wednesday's game early with tightness in his left groin. Swisher wasn't scheduled to play Thursday against the Nationals anyway, so the Yankees will not run any tests and wait to see how he feels. Swisher was in the clubhouse during the final innings of Wednesday's game, showing no visible signs of any injury.

Infielder Eduardo Nunez, meanwhile, will continue to rest as he sits out with a right hand bruise. Nunez hasn't played since March 5, when he was hit by an Austin Hyatt pitch against the Phillies.

Banuelos struggles with his command vs. Jays

DUNEDIN, Fla. -- Yankees lefty Manny Banuelos struggled for the first time this spring on Wednesday afternoon against the Blue Jays, giving up four earned runs on three hits and two walks in one inning of work.

Rated the Yankees' No. 1 prospect and the No. 13 overall prospect by MLB.com, Banuelos walked Yunel Escobar to lead off the fifth, struck out Kelly Johnson and got Jose Bautista to fly out to right field. That's when Banuelos ran into trouble, walking Adam Lind and then yielding a three-run homer to Edwin Encarnacion. Brett Lawrie then tripled to right-center, and Colby Rasmus added an RBI single before Banuelos forced J.P. Arencibia into an inning-ending groundout.

"He couldn't throw his secondary pitches for strikes, and he was behind. It's just a tough combination," Yankees manager Joe Girardi said. "Manny just really struggled with his command."

Banuelos pitched well in his previous two appearances this spring, combining to throw four scoreless innings with three hits, two walks and three strikeouts over two appearances and needing only 15 pitches to get through each outing.

"It's just a bad day. Next time, he's going to come back and do what he always [does]," catcher Francisco Cervelli said. "He has four pitches to be in the big leagues, but with the experience, he's going to learn how to make adjustments during the game and have more patience."

Slow-starting Ibanez not worried

DUNEDIN, Fla. -- Raul Ibanez hasn't gotten off to an ideal start this spring, going just 2-for-24 at the plate with no walks and five strikeouts in eight games. The Yankees' lefty-hitting designated hitter said he is still in the process of getting his timing down, and he expects to be back in the swing of things before too long.

"I think a lot of it has to do with feeling comfortable and finding your timing. I've kind of been in between timing mechanisms," Ibanez said Wednesday after going 0-for-3 with a strikeout against the Blue Jays. "I'm trying to eliminate some of the extra movement and getting acclimated to moving less. It's almost like you're going backward at first, I think, and then hopefully you catch on.

"You definitely have to wait and trust that it's going to be there. It'll come. It's happened to me before."

Ibanez said he is usually a slow starter during Spring Training, and the numbers back that up. After eight games last spring, Ibanez was batting .182. Through the same span in 2010, he was hitting .115.

"To me, it looks like a little bit of a timing issue. He's a little bit late," Yankees manager Joe Girardi said. "That's something that's very correctable, and you hope when they start playing two and three days in a row, they kind of get that timing better. Some guys take a while to get going in Spring Training, and right now at times, I think he's just a little late."

The Yankees signed Ibanez, 39, to a one-year, $1.1 million contract in late February and expect him to platoon at DH with Andruw Jones. Ibanez hit .245 with a .707 OPS last season with the Phillies.