Quarterback is arguably the toughest position in football and perhaps in any sport.
Conventional wisdom says that NFL teams carry three quarterbacks – a franchise quarterback, a seasoned veteran as backup and a young prospect who can be groomed to be a starter or at least a second team pro.
Here’s a look at the quarterback prospects coming out of college and joining in the 2013 NFL Draft who are now entering their third pro training camp.
Matt Barkley, USC
Barkley was tagged as a first-round pick after his junior season but he chose to the return to lead the Trojans. His stock fell and he was picked by the Philadelphia Eagles in the fourth round.
Barkely won the Wueffel Trophy in 2012.
He is the third team quarterback for the Eagles behind Sam Bradford and Mark Sanchez. Barkley is battling Tim Tebow for the third spot.
Barkley has seen limited action, with zero touchdown passes and four interceptions and a quarterback rating of 43.8.
Tyler Bray, Tennessee
Bray didn’t start all 12 games for the Volunteers until his junior year. Unlike Barkley, Bray bolted for the NFL draft. Even though he has an NFL-arm, scouts thought he needed another year of college to round out his experience.
Bray was not drafted but signed a free agent contract with the Kansas City Chiefs. He has not taken a regular season snap for the Chiefs but has shown talent in the preseason games.
Unfortunately, Bray tore his ACL in January in non-football injury and had surgery. The Chiefs then drafted Georgia quarterback Aaron Murray in the fifth round and signed quarterback Terrelle Pryor to compete with Bray for the third spot behind starter Alex Smith and backup Chase Daniel. Depending on how Bray recovers from his injury, he might not be with the Chiefs or even in the NFL this fall.
B.J. Daniels, South Florida
Daniels was drafted as a quarterback by the San Francisco 49ers but was waived. Seattle signed him to their practice squad in 2013. The Seahawks think he will see the field as a wide receiver or kick returner.
Zac Dysert, Miami of Ohio
Dysert was drafted by the Denver Broncos in the seventh round and the last quarterback drafted. As a rookie, he backed up future hall of famer Peyton Manning and backup Brock Osweiller.
Dysert has not appeared in a regular season game but has played some in the exhibition season. The Broncos drafted Trevor Siemian out of Northwestern in the 2015 draft, also in the seventh round. Siemian tore his ACL in November of 2014 but reports are that he will be ready to go in training camp and will challenge Dysert for the third quarterback spot.
Mike Glennon, North Carolina State
Glennon was drafted in the third round of the 2013 draft by the Tampa Bay Buccaneers – the third quarterback drafted behind Geno Smith and E.J. Manuel.
Glennon has 18 starts for Tampa Bay, which has had a terrible offensive line. He is destined to be a backup this year because the Buccaneers drafted Jameis Winston of Florida State with the No. 1 pick overall.
NFL.com writer Marc Sessler labeled Glennon as the second best backup quarterback in the league (behind Mark Sanchez of the Eagles).
Landry Jones, Oklahoma
Jones was picked by the Pittsburgh Steelers in the fourth round in 2013. Like Barkley, Jones stuck around for this senior year at OU after being projected as a first round pick after his junior season.
As a freshman, he took over for an injured Sam Bradford. He was an honorable mention All American and won the Sammy Baugh Trophy in 2010.
Jones is stuck behind future hall of fame quarterback Ben Roethlisberger, who has won two Super Bowls, and backup journeyman Bruce Gradkowski (who is from the City of Pittsburgh).
Jones has not suited up for a regular season game in the past two years as Roethlisberger has hardly missed a snap due to injury.
Jones is battling with former Clemson quarterback Tajh Boyd for the No. 3 roster spot.
Pittsburgh opens the preseason at Minnesota in the Hall of Fame game. Roethlisberger will start and probably play one or two series and Jones will get a shot to show how well he can play.
E.J. Manuel, Florida State
Manuel was drafted in the first round of the 2013 NFL Draft by the Buffalo Bills. Manuel earned a starting job as a rookie but a sprained knee make him miss five games.
Last season, Manuel was benched and Kyle Orton took over. This year, Manuel will compete with free agent Tyrod Taylor and Matt Cassel for the starting nod under head coach Rex Ryan.
Manuel has a combined quarterback rating for 78.6 with 16 touchdowns and 12 interceptions in 14 games. He has completed 59 percent of his passes.
Brad Sorenson, Southern Utah
Sorenson was a seventh round pick by the San Diego Chargers. He didn’t suit up for a game his first season. In 2014, he was released at the end of training camp and later returned to the Chargers’ practice squad.
Philip Rivers is the starter and he is backed up by Kellen Clemens. Sorenseon will battle Chase Rettig for the No. 3 spot.
Ryan Nassib, Syracuse
Nassib was drafted in the fourth round in 2013 by the New York Giants. He has been the primary backup to Eli Manning, who has won a Super Bowl. Manning has started 167 regular season games in a row.
Nassib has played very sparingly in games when the Giants were way ahead or way behind.
His second place spot seems secure.
Sean Renfree, Duke
Renfree was drafted by the Atlanta Falcons in the seventh round in 2013. He was placed on the injured reserve list prior to the 2013 season.
Matt Ryan is the starter for Atlanta and T.J. Yates is his backup. Renfree has gotten playing time in preseason games but barring injuries, won’t play during the regular season.
Tyler Wilson, Arkansas
Wilson was drafted by the Oakland Raiders in the fourth round of the NFL 2013 Draft. He holds a host of passing records for the Razorbacks.
In 2013, Wilson couldn’t beat out starter Matt Flynn or backup Terrelle Pryor. Wilson didn’t make the final 53-player roster and was put on the practice squad. He was activated later in that season.
Since then, he was signed and released by the Tennessee Titans. He was signed last preseason by the Cincinnati Bengals. He played in two exhibition games but he was waived in the final cuts.
Wilson may be out of football although the Detroit Lions and the Chicago Bears gave him some attention at the NFL Veterans Combine.
Geno Smith, West Virginia
Smith was the seventh pick in the second round of the NFL draft by the New York Jets. He has a career passing rating of 71.5. Smith has thrown 25 touchdown passes and 34 interceptions.
He has won 11 games and lost 18.
The Jets are still hoping that Smith will be their franchise quarterback.