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Backup Cowboys Quarterback Jon Kitna
These are quarterbacks who are career backups. They won't lead a team to a Super Bowl, but they are more than serviceable as plug-ins.
50: Bruce Gradkowski
Gradkowski has been solid when given an opportunity to compete for the Oakland Raiders. Last season he played in six games, throwing five touchdowns and seven interceptions. He is a serviceable quarterback at best, but always gives it his all.
49: Dennis Dixon
Dixon is a quality football player who has done pretty well when given playing time.
The Oregon product may be best remembered for giving a valiant effort in his first career start on Monday Night Football against Ray Lewis and the Baltimore Ravens. Although the Steelers lost the game in overtime, Dixon threw a touchdown and ran for 27 yards to prove he deserved a place in this league.
48: Jon Kitna
The former Bengals and Lions starting quarterback has relished as a backup to Tony Romo in Dallas.
Kitna played in 10 games last season as a result of Romo's season-ending fractured clavicle. Amidst the Cowboys' 1-5 start, little was expected of Kitna. Although he didn't lead them to the playoffs, Kitna went 4-6 down the stretch to give his team some momentum going in to the 2011-2012 season.
Although Kitna is getting up there in age, he is a serviceable backup whose a valuable commodity on a NFL roster.
47: Kerry Collins
The Penn State great had a masterful season for the Tennessee Titans in 2008. Collins led the Titans to a 13-3 record that was tops in the AFC. The 38-year-old will now be looked to groom rookie quarterback Jake Locker.
Update I: Kerry Collins has retired from the Titans.
Update II: Amid the questions of whether Peyton Manning will be healthy week one, the Colts have signed Collins.
46: Marc Bulger
Bulger has had quite a career; drafted in the sixth round by the Carolina Panthers, he went from being on the St. Louis Rams' practice squad to being a two-time Pro-Bowler.
Bulger threw 122 touchdowns and 93 interceptions in eight memorable seasons with the Rams. Although the 34-year-old is past his prime, Bulger has made himself into a satisfactory backup for the Baltimore Ravens.
45: Shaun Hill
Hill has been one of the best back-up quarterbacks over the past five seasons.
He began his career with the Minnesota Vikings, but received no playing time. In 2006, Hill signed with the 49ers, and after two years of backing up Trent Dilfer and Alex Smith, Hill was named the starter on Monday Night Football against the Arizona Cardinals. He played well, narrowly losing to the highly-favored Cardinals, 29-24.
Hill was traded to the Lions for a 2011 seventh round pick and replaced injured starter Matthew Stafford. Over his career, Hill has amassed 39 touchdowns and 23 interceptions.
44: Jimmy Clausen
Clausen's rookie campaign showed why he was passed by 32 teams in the first round of the NFL Draft.
The Notre Dame product was mediocre at best, and his stat-line does little to help his cause. Clausen racked up a measly three touchdowns, nine interceptions and had a horrendous 58.3 passer rating.
The Panthers showed their lack of trust in him by taking Auburn quarterback Cam Newton with the No. 1 overall pick in the 2011 Draft. It looks like Clausen will either be traded or serve as a backup to Newton in Carolina.
43: Charlie Whitehurst
A bit of an unknown commodity coming into the season, Whitehurst was thrown to the wolves for his second career start in a Sunday night contest between the Seahawks and the Rams; the winner would move on to the playoffs.
Whitehurst led the Seahawks to a 16-6 victory over the Rams for their first playoff appearance in three years. It looks like Whitehurst may become the permanent starting quarterback if Matt Hasselbeck is not re-signed.
42: Matt Flynn
Under the tutelage of Aaron Rodgers, this national champion from LSU has grown into a quality backup quarterback.
Flynn got his first start against the New England Patriots when Rodgers was not cleared to play as a result of a concussion. He did a wonderful job for the depleted Packers and almost led them to victory.
Although the Packers lost the game 31-27, Flynn's performance opened the eyes of the Packer faithful and assured them they are two quarterbacks deep.
41: Alex Smith
There's no better way of saying it, but the former No. 1 overall pick out of Utah has been nothing more than a bust.
Smith has been lukewarm in his five seasons as the signal-caller for the 49ers, compiling 51 touchdowns, 53 interceptions and a 72.1 passer rating.
The 49ers seemed to have moved on to a new era by selecting Nevada quarterback Colin Kaepernick in the third round of the draft. It's sad to say, but it looks like the former Utah product is nothing more than a backup in the NFL.