Vikings Pro Bowler Jerome Felton will likely miss the rest of the preseason after undergoing an emergency appendectomy on Wednesday afternoon according to multiple NFL sources.

The veteran fullback attended the team's morning walk-through on the final full day of training camp but was then absent from the afternoon practice. It turns out a source said that Felton was rushed back to the Twin Cities for surgery to remove his appendix.

That operation was a success and the timeline for Felton's recovery should be somewhere in the ballpark of two weeks. But it's almost certain the team will keep Felton out of game action until the regular season opens Sept. 8 in Detroit.

The Vikings will play their second preseason game Friday night in Buffalo against the Bills and follow nine days later with an NBC-televised "Football Night in America" contest at San Francisco. The preseason finale will be Aug. 29 at Mall of America Field against Tennessee. But significant starters even if fully healthy aren't expected to play in that contest.