High School and College
Clemens played high school football for the Burns Hilanders and led them to the Oregon state 3A championship game in 1999. Upon graduating, Clemens played college football at the University of Oregon. He was a senior during the 2005 season, and was pursuing several school records until he broke his ankle while playing a game at Arizona. He would miss the remaining three games of the season.
20062006 NFL Draft to serve as backup to Chad Pennington and is considered by many to be the future of the Jets organization. A healthy Pennington resulted in little playing time for Clemens in 2006, recording only one incompleted pass in his rookie season.
Due to an injury to Chad Pennington in the Jets 2007 season opener against the New England Patriots, Clemens recorded his first completed pass in the NFL with a final record for the day of five complete passes on ten attempts. Clemens made his first career start in week 2 of the 2007 season. Clemens' effectiveness was minimized by the Ravens' defense for the first three quarters, with the Jets trailing 20-3 at one point. However, in the fourth quarter, Clemens led the Jets on a scoring drive that cut Baltimore's lead to 20-13. On the last drive, Clemens threw to wide receiver Justin McCareins, who dropped the potential game-tying touchdown pass when it slipped through his hands and it was intercepted by Ray Lewis. Clemens then returned to the bench until the fourth quarter in Week 8 against the Bills. With the Jets down 13-3, Clemens was unable to make an impact, throwing 2 interceptions. It was then announced that Clemens will take over as the starting quarterback. Clemens struggled, throwing twice as many interceptions as touchdowns, and after an injury against the New England Patriots missed the following game against Tennessee. However he did lead the team to 3 wins.
Kellen is a sixth generation cattle rancher, inspiring his nickname, "Six". He grew up herding cattle on his family's ranch in Burns, Oregon, where they own over 100 head of black Angus cattle. In his spare time, Clemens enjoys horseback riding.