NASHVILLE, Tennessee — Tennessee left tackle Michael Roos is retiring from the NFL after playing 10 seasons and 148 games with the Titans.
Roos announced his decision Thursday on social media after informing the Titans.
"After 10 years as a Tennessee Titan I have decided to retire from football," Roos wrote in his Instagram post. "I have given this decision much consideration. I feel fortunate to have played this long coming from a TE turned DE turned OT from Eastern Washington University."
Roos ranked second only to Dominic Raiola (155) for starts by offensive linemen since 2005. The 41st pick overall in 2005, Roos was an All Pro and Pro Bowler in 2008 as the Titans went an NFL-best 13-3. He helped block for Chris Johnson's 2,006-yard rushing season in 2009.
He also anchored a line that blocked for a 1,000-yard rusher each year between 2005 and 2013 while ranking third for fewest sacks allowed in the NFL in that span.
Roos started the first 119 games of his career, a streak stopped only by an emergency appendectomy in 2012. But a knee injury limited Roos to five games last season, and he said he was thinking of retiring with his contract expiring. Roos thanked his coaches from high school through Ken Whisenhunt and all his teammates.
"I'm excited to begin the rest of my life, and I am grateful to do so now, while I am fully healthy," Roos wrote. Roos was replaced by Taylor Lewan, their first-round draft pick in 2014, after the veteran was hurt.
General manager Ruston Webster described Roos as a true pro and model of consistency during his time in Tennessee.
"He had the unique ability to make playing a very difficult position look effortless," Webster said in a statement. "Playing one of the toughest positions on the field, he was a player that Titans fans could count on week in and week out, and one of the most durable players in the history of the franchise."
Roos started his first game as a rookie at Pittsburgh at left tackle before switching to right tackle for the rest of the season. He then took over at left tackle after Brad Hopkins retired before the 2006 season. Last season was his only year where Roos didn't play at least 15 games. Mike Munchak coached Roos first as his position coach, then head coach between 2011 and 2013.
"Michael was such an intelligent football player," said Munchak, now a Steelers assistant coach. "He always understood his opponent, our offensive scheme, their defensive scheme and all the angles involved. That knowledge and film work let him play with a great deal of confidence."
David Stewart was drafted the same year as Roos and played right tackle before retiring a year ago.
"He led by example and made everybody better," Stewart said. "It was an honor to have him around my entire career to push me and make me a better player."
Kevin Mawae played center for the Titans between 2006 and 2009. He congratulated Roos on his retirement.
"He was a great teammate and a friend in and out of the locker room," Mawae said. "Michael was professional in every aspect, and served as an example of what a professional football player should be. I am proud to say that we played together."