49ers linebacker Patrick Willis has a slight fracture in his hand and will miss the preseason. (Rob Tringali/Getty Images)
San Francisco 49ers linebacker Patrick Willis has a slight fracture in his right hand and will miss the entire preseason but is expected to be ready for the regular season, ESPN.com reports.
The report also states that the team will "proceed with caution" in keeping Willis out of preseason action.
CSNBayArea.com reported that Willis wore a wrap on his hand after suffering the injury from a collision during a blitz pickup drill. The six-time Pro Bowler had 88 total tackles and 2.5 sacks last season for the Niners.
VIDEO: Postcards from training camp