McNair injured his groin early in the 2007 season opener and was limited to six games after developing shoulder and back problems. In going 2-4 as a starter last season, he completed 133 of 205 passes for 1,113 yards and committed 11 turnovers (four interceptions, seven fumbles).
In his final game, McNair had three turnovers Nov. 11 against the Cincinnati Bengals and failed to lead a scoring drive. Afterward, a devastated McNair said he "probably would agree" if the coaches replaced him with Boller.
One of the NFL's most-injured stars, McNair has had at least seven surgeries since becoming a starter in 1997 - (in order) his right knee, lower back, left big toe, right shoulder, left ankle, sternum and torn rotator cuff.
"It's been a long road, but I've been fortunate to surround myself with great people, great coaches, great teammates and great family," said McNair, who was scheduled to make $4 million this season. "My career speaks for itself. I can reflect back on it and not change a thing. I played the game with a lot of passion and a lot of heart, and it showed over the course of my 13 years."
He said he will return to his home in Mississippi to help wife, Mechelle, raise their four kids. "I can become now the father I need to be to my kids," McNair said.
He said he leaves the game with no regrets.
"It's a sad and emotional day for me. I'm trying to do the best I can to hold it in," said McNair, whose voiced cracked a few times during the news conference. "But at the same time, I'm opening up a lot more doors for the future I got ahead."
Years in NFL: 13
Personal: Lives in Mississippi with wife, Mechelle, and four sons. Went to college at Alcorn State. Was the No. 3 overall pick in the 1995 draft. Gives money to Boys & Girls Clubs and scholarships to his football camps through the Steve McNair Foundation.
Played last two years with the Ravens, leading the team to a 13-3 record and the playoffs in 2006. Started all 16 games that year. In 2007, played in just six games because of injuries and had more interceptions (four) than touchdowns (two).
In 11 seasons with the Houston Oilers/Tennessee Titans:
McNair went to three Pro Bowls and led the team to the Super Bowl during the 1999 season. He is one of three quarterbacks in NFL history to throw for 30,000 yards and rush for 3,500.
Sun archives: McNair retires from Ravens
'Warrior' quarterback and co-MVP shocks teammates, blames injuries
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