Question: Which former American football quarterback who earned a Super Bowl Ring with the Rams currently serves as an NFL on CBS sideline reporter alongside Jamie Erdahl and Greg Gumbel?

Context paragraphs:
Madison Hedgecock: Madison Smith Hedgecock (born August 27, 1981) is a former American football player who was a fullback in the National Football League (NFL) for seven seasons.  He played college football for the University of North Carolina.  He was drafted by the St. Louis Rams in the seventh round of the 2005 NFL Draft.  An All-Pro selection and a Pro Bowl alternate in 2008, Hedgecock earned a Super Bowl ring with the New York Giants in Super Bowl XLII.

Greg Gumbel: Greg Gumbel (born May 3, 1946) is an American television sportscaster.  He is best known for his various assignments on the CBS network (most notably, the National Football League and NCAA basketball).  The older brother of news and sportscaster Bryant Gumbel, he became the first African-American (and Creole) announcer to call play-by-play of a major sports championship in the United States when he announced Super Bowl XXXV for the CBS network in 2001.  He is of Creole ancestry.  Gumbel is currently a play-by-play broadcaster for the "NFL on CBS" alongside Trent Green as well as the studio host for CBS' men's college basketball coverage.

Greg Hawthorne: Greg Hawthorne (born September 5, 1956) is a former American football player with the National Football League.  Drafted out of Baylor University, Hawthorne played 9 seasons with the Pittsburgh Steelers, as a rookie, he won a Super Bowl ring with the Steelers in Super Bowl XIV over the Los Angeles Rams.  He also played for the New England Patriots (including playing in Super Bowl XX), and also played for the Indianapolis Colts.  As a running back, tight end, and wide receiver, he accumulated 527 rushing yards and 92 receptions between 1979 and 1987.

David Carr (American football): David Duke Carr (born July 21, 1979) is a former American football quarterback who played in the National Football League (NFL).  He was drafted by the Houston Texans first overall in the 2002 NFL Draft.  He played college football at Fresno State.  Carr also played professionally for the Carolina Panthers, New York Giants, and San Francisco 49ers.  He received a Super Bowl ring as a backup for the Giants after their victory over the New England Patriots in Super Bowl XLVI.  Carr's status as a number one draft pick and subsequent career has led to him being considered a draft bust.

Marvin Harrison: Marvin Daniel Harrison (born August 25, 1972) is a former American football wide receiver in the National Football League (NFL).  He played college football for Syracuse University, and was drafted by the Indianapolis Colts in the first round of the 1996 NFL Draft.  He spent all 13 of his NFL seasons with the Colts, most of them with quarterback Peyton Manning, and is widely considered as one of the greatest and most productive wide receivers in NFL history.  He earned a Super Bowl ring with the team in Super Bowl XLI over the Chicago Bears.

D'Marco Farr: D'Marco Farr (born June 9, 1971) is a former American football player and with the Los Angeles/St.  Louis Rams in the National Football League and current sideline reporter for the Los Angeles Rams.  Farr played defensive tackle for the Rams from 1994–2000 and recorded 36.5 career sacks.  He was a member of the Rams team that won Super Bowl XXXIV.

Trent Green: Trent Jason Green (born July 9, 1970) is a former American football quarterback who played in the National Football League (NFL) for fifteen seasons.  He played college football for Indiana University.  He was drafted by the San Diego Chargers in the eighth round of the 1993 NFL Draft, and also played for the BC Lions, Washington Redskins, St. Louis Rams, Kansas City Chiefs and Miami Dolphins.  He earned a Super Bowl ring with the Rams and was selected to two Pro Bowls with the Chiefs.

Jamie Erdahl: Jamie Erdahl (born December 3, 1988) is an American reporter for CBS Sports.  She currently serves as an NFL on CBS sideline reporter, teamed up with Greg Gumbel and Trent Green.  Jamie is also used during the NCAA basketball regular season, and on CBS/Turner March Madness coverage.  She joined the company in 2014, and contributes to CBS Sports Network as a studio host.

Matt Cavanaugh: Matthew Andrew Cavanaugh (born October 27, 1956) is an American football coach and former player who is the offensive coordinator for the Washington Redskins of the National Football League (NFL).  He is a former American football quarterback in the NFL who played from 1978 to 1991.  In the course of his career as a professional football player, he earned two Super Bowl rings.  Since his retirement, Cavanaugh has worked as an offensive coach and coordinator, for teams including the San Francisco 49ers, the Chicago Bears, and the Baltimore Ravens, where he earned a third Super Bowl ring as a coach.

Tony Banks (American football): Anthony Lamar "Tony" Banks (born April 5, 1973) is a former professional American football quarterback who played in the NFL.  As part of the Baltimore Ravens, he helped the team win Super Bowl XXXV over the New York Giants.  Banks serves as a football sideline reporter on the Big Ten Network alongside Chris Denari and Jeremy Leman.

Supporting paragraphs: Jamie Erdahl Trent Green
Answer: Trent Green