Detmer before the Eagles' 2006–07 NFC Wild Card game
|Date of birth:||July 5, 1973|
|Place of birth:||San Antonio, Texas|
|Height:||6 ft 0 in (1.83 m)|
|Weight:||195 lb (88 kg)|
|High school:||Mission (TX)|
|NFL draft:||1997 / Round: 7 / Pick: 207|
|Career NFL statistics|
|Stats at NFL.com|
Koy Dennis Detmer (born July 5, 1973) is a retired American football quarterback. He was originally drafted by the Philadelphia Eagles in the seventh round of the 1997 NFL Draft. He played college football at Colorado. He is the younger brother of former NFL quarterback Ty Detmer, and son of coach Sonny Detmer.
Detmer played at Mission High School, in Mission, Texas. He led the Eagles to the 5A playoffs in 1990 and 1991. The 1990 team lost in the semifinals against eventual state champion Aldine Mustangs (54-21). With Detmer at quarterback, Mission High established a state record with 4,829 passing yards for a season in 1990.
Up until his release in August 2006, Detmer had played his entire career in Philadelphia. He spent most of his career as a backup to quarterback Donovan McNabb and as the place-kick holder for David Akers. His action as a starter was limited to five games in the 1998 season, one game in the 2002 season, with McNabb out with a broken ankle. Detmer played well going 18-26 with 227 yards and 3 total touchdowns (2 passing and 1 rushing). He dislocated his elbow in the 4th quarter of that game and was replaced by third string quarterback A. J. Feeley. Detmer healed enough to play in the final games of 2002, but head coach Andy Reid decided to stay with Feeley, who was having success . He also saw action in the 2004 season finale against Cincinnati, which the Eagles lost. Detmer was released after the Eagles signed former Eagle Feeley as their backup and moved punter Dirk Johnson into the role of kick holder. He was re-signed on January 2, 2007 by the Eagles to provide a third quarterback for the team's playoff push. He was also re-signed to be the kick holder for the Eagles.
Detmer had his NFL career extended for a few days by signing with the Minnesota Vikings on November 6, 2007. The Vikings needed a second quarterback behind Brooks Bollinger while Tarvaris Jackson and Kelly Holcomb recovered from injuries. Detmer was reunited with Vikings Head Coach Brad Childress who previously was with the Eagles as the Offensive Coordinator. Detmer's stint with the Vikings was his first professional experience not in an Eagle uniform. The Vikings released Detmer on November 10, 2007, apparently because Holcomb had recovered sufficiently to play.
In 103 NFL games, Detmer has a career passer rating of 61.2 with ten career touchdowns and 14 interceptions thrown.
Detmer is currently a coach on the Somerset High School (Somerset, Texas) staff under his father, Head Coach, Hubert 'Sonny' Detmer. He also coached his son, Koy Detmer Jr., at Somerset. His son committed to Ty's alma mater, Brigham Young University, as a walk-quarterback for the 2015 season. 
- "Koy Detmer". Philadelphia Eagles. Archived from the original on June 23, 2007. Retrieved October 27, 2013.
- Seifert, Kevin (November 7, 2007). "Vikings send rescue call to Detmer". Minneapolis Star Tribune. Archived from the original on October 11, 2008.
- Seifert, Kevin (November 13, 2007). "Vikings: Detmer was a costly insurance policy". Minneapolis Star Tribune. Retrieved October 27, 2013.
- ESPN player page
- "BYU football recruiting: 2015 QB Koy Detmer Jr. officially chooses to walk on at BYU".
|Wikimedia Commons has media related to Koy Detmer.|
- Koy Detmer at NFL.com
- Koy Detmer at Pro-Football-Reference.com
- Philadelphia Eagles bio (archived from 2007)