Question: The Blind Side is an American biographical sports drama film, released in which year, the storyline features Michael Oher, an American football offensive tackle who is currently a free agent?

Context articles: Ron Singleton
Mark Ortmann
Leigh Anne Tuohy
Nick Mondek
Cornell Green (offensive tackle)
Tyson Chandler (American football)
The Blind Side (film)
Michael Oher
Eric Mensik
Hugh Freeze

Ronald Lee Singleton (born April 15, 1952 in New Orleans, Louisiana) is a former American football offensive tackle in the National Football League.
 He was drafted by the San Diego Chargers in the fourth round of the 1976 NFL Draft.
 He played college football at Grambling State.
 He is mentioned in The Blind Side, by Michael Lewis.
Mark William Ortmann (born June 24, 1986) is a former American football offensive tackle.
 He was signed by the Carolina Panthers as an undrafted free agent after the 2010 NFL Draft, and was waived two months later.
 He later signed with the Atlanta Falcons on August 23, 2010, but was waived on August 28.
 He had previously played four years for the Michigan Wolverines football team, where he was a regular starter at offensive tackle as a redshirt junior and senior for the 2008 and 2009 teams.
Leigh Anne Tuohy (née Roberts; born August 9, 1960) is an American interior designer.
 She is best known for being the legal guardian of Michael Oher.
 Their story was featured in Michael Lewis' 2006 book, "", and its 2009 feature film adaptation "The Blind Side".
 In the film, Tuohy was portrayed by actress Sandra Bullock, who won the Academy Award for Best Actress for the performance.
Nicholas James Mondek (born November 3, 1988) is an American football offensive tackle who is a free agent.
 He was selected in the sixth round, 195th overall, by the Texans in the 2012 NFL Draft.
 He played college football at Purdue.
 While at Purdue he was recruited by Joe Tiller as a defensive tackle, but when Danny Hope took over the program in 2010, Hope transitioned Mondek into an offensive tackle.
Cornell Duane Green (born August 25, 1976) is a former American football offensive tackle.
 He was signed by the Atlanta Falcons as an undrafted free agent in 1999.
 He played college football at the University of Central Florida where he was a four-year starter at offensive tackle.
 He played high school football at Pinellas Lakewood High.
Tyson Chandler (born February 2, 1991) is an American football offensive tackle of the National Football League who is currently a free agent.
 He was signed by the Bills as an undrafted free agent in 2015.
 He played college football at North Carolina State.
The Blind Side is a 2009 American biographical sports drama film written and directed by John Lee Hancock, based on the 2006 book "" by Michael Lewis.
 The storyline features Michael Oher, an offensive lineman who was drafted by the Baltimore Ravens of the NFL.
 The film follows Oher from his impoverished upbringing, through his years at Wingate Christian School (a fictional representation of Briarcrest Christian School in Memphis, Tennessee), his adoption by Sean and Leigh Anne Tuohy, to his position as one of the most highly coveted prospects in college football, then finally becoming a first-round pick of the Ravens.
Michael Jerome Oher ( ; born Michael Jerome Williams, Jr.; May 28, 1986) is an American football offensive tackle who is currently a free agent.
 He played college football for the University of Mississippi, and was drafted by the Baltimore Ravens in the first round of the 2009 NFL Draft.
 He has also played for the Tennessee Titans and Carolina Panthers.
Eric Mensik (born December 18, 1987) is a former American football offensive tackle.
 He was signed by the Arizona Cardinals as an undrafted free agent in 2011.
 He played college football at Oklahoma from 2007 to 2010, beginning as a tight end and later moving to the offensive line.
 He was selected as a first-team All-Big 12 player after the 2010 college football season.
 Mensik was signed by the Arizona Cardinals as an undrafted free agent following the end of the NFL lockout in 2011.
 He was waived on August 29, 2011.
Danny Hugh Freeze Jr. (born September 27, 1969) is an American football coach.
 He is the former head coach at the University of Mississippi, and is widely known for being portrayed as the head coach from the 2009 motion picture "The Blind Side" starring Sandra Bullock.
 Freeze served as the head football coach at Lambuth University from 2008 to 2009 and at Arkansas State University in 2011.
 He was previously a successful high school football coach at Briarcrest Christian School in Memphis, Tennessee, where he coached Michael Oher and Greg Hardy.
 He would later follow both of them to the University of Mississippi.