Report: Brady's hand injury caused by collision with Burkhead in practice

After days of speculation surrounding Tom Brady's mysterious hand injury, we may finally have an idea of who else was involved in the incident.

Despite Brady and New England Patriots head coach Bill Belichick remaining mum, it was reported Saturday morning that the injury was suffered in a collision during practice with teammate and running back Rex Burkhead, according to Mike Garafolo of NFL Network.

"Brady's hand, it's a concern. He's got a cut on the hand, it happened the other day in practice when he collided with a teammate ... it was Rex Burkhead," Garafolo said.

Related: Belichick characteristically mum on Brady's hand injury

Initial reports Friday indicated Brady suffered the injury after hitting his thumb on a teammate's helmet. The impact reportedly caused a cut that was "gushing blood," and Brady "was in a lot of pain," and that he subsequently received stitches, according to Ian Rapoport of NFL Network.

Brady fielded questions during a press conference Friday, but insisted he would not talk about his hand. In regards to questions surrounding whether he believes he will play Sunday against the Jacksonville Jaguars, Brady's resounding answer was "we'll see."