MESA, Ariz. -- Cubs infielder Junior Lake was diagnosed with a stress fracture in the top rib on his right side and will be sidelined four to six weeks, the team announced Wednesday. He will rehab the rest of Spring Training.
Lake, who missed time last spring because of an ankle injury and was then slow to start the season because of a back injury, played third base and some outfield this spring.
"Learning a new position, he's a little bit raw there, but he still did a pretty good job there," Cubs manager Dale Sveum said of Lake's play at third. "Swinging the bat, he's a very premeditated swinger. He's just not getting good pitches to hit, and he's swinging at arm action a lot. He's a guy who has a lot of bat speed and doesn't have to be a premeditated swinger, but he's still in that mode. He's got all the tools. We didn't get to see him play the outfield but a couple times. It's a nice player to have, but there's still development there."
Lake, who turns 23 on March 27, batted .304 in 10 games this spring.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.