Tennessee Titans left tackle Michael Roos underwent an appendectomy on Monday morning, just one day after making his 119th consecutive start for the team on Sunday.
Roos, a second-round pick in 2005, has started every game of his eight-year NFL career since joining the Titans from Eastern Washington.
Roos had some soreness after Sunday's 35-34 win over Buffalo, but was checked out and deemed to be OK. However, as the pain continued, he was diagnosed on Monday with appendicitis, and underwent surgery.
According to Coach Mike Munchak, Roos will be "day-to-day" with the matter, but he could be in danger of having his consecutive games streak interrupted. If Roos cannot play, Mike Otto would get the start against the Indianapolis Colts on Sunday.
Also, linebacker Zac Diles, who started in place of Colin McCarthy, is out for the season with a broken right leg. The Titans expect McCarthy back, but will audition linebackers on Tuesday with an eye on signing one to the active roster.