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The more Cassel plays, the more likely he'll reach his potential, as long as he's kept upright.
It's like watering a nice plant. If you do a good job of keeping a watering schedule and it keeps nurtured, the plant should grow into full bloom and you'll reap the rewards of your work.
The same can be said of Cassel. He came from out of nowhere essentially, not starting a single game since high school and then backing up Tom Brady after getting out of USC.
Not exactly the two best situations to grow as a player with live game experience. If you can't get on the field, you can't get any better.
Cassel's big opportunity landed to him like his dad tossed him car keys to the Ferrari. Essentially, in replacing Tom Brady, his job was to not screw up too bad. How did Cassel respond to the task at hand? He thrived, with a few growing pains here and there.
He led the 2008 Patriots to a record of 10-5 as a starter, throwing for more than 3,600 yards and 21 touchdowns to just 11 interceptions.
He was then franchise tagged during the uncertainty of Brady's knee injury recovery, eventually traded to the Chiefs.
This 2008 season served as an audition, of sorts.
Following up his coming out party of 2008, he took a step back, passing for just 2,924 yards and as many touchdowns as interceptions (16) for his new team.
The Chiefs struggled to a 4-12 record behind Cassel's inconsistent play, but as the Chiefs offense grew, 2010 looked to be more promising for the Chiefs going forward.
Cassel and the Chiefs surprised many, with him leading the team to a 10-6 record, good enough for first place in the AFC West and a home playoff appearance (their first home playoff game since 2003).
Cassel's 3,100-plus yards and 27-to-seven touchdown to interception ratio were a great turnaround from his down 2009, and his 2010 season also saw the breakout of his top wide receiver, Dwayne Bowe.
Now entering his third season with the Chiefs, he'll look to use his experience in the system and in the huddle to further develop into one of the more elite quarterbacks in the NFL.