Freshman cornerback Gary Gray landed on his right forearm during Friday's practice and cracked the bone.
The injury, suffered during one-on-one drills, placed Gray in a cast and out for 4-to-6 weeks, otherwise known as the remainder of spring practice.
Gray is one of three players, along with quarterback Jimmy Clausen and running back Armando Allen, to enroll in Notre Dame this past January to get a head start on their college careers.
"It's not displaced, not all the way through, but it's enough where you have to put it in a cast for a minimum four weeks," Weis said. "We talked about it last night. This isn't something you wait. You just put it in a cast. There is no pin, no operation, you just let the thing heal."
-By Michael Rothstein of The Journal Gazette