Smith, a former second-round pick to the New York Jets in 2013, spent last season with the Los Angeles Chargers attempting four passes all season. Smith has a career passer rating of 72.7 formulated in part by 29 career touchdown passes to go along with 36 interceptions.
While Lynch, a first-round pick to Denver in 2017, is the younger of the two, Smith is by far more experienced. He has appeared in 40 career games with 31 starts while Lynch has appeared in five games with four starts while throwing five touchdown passes and four interceptions.
The addition of Smith gives Seattle someone with far more experience to fall back on just in case Lynch doesn't show much progression. On paper, Lynch, 25, might more more desirable than Smith, 28, because of his youth and better passing skills. But if Lynch doesn't progress, Smith would at least give Seattle a veteran to lean on with loads of game experience.
Of course, neither man will likely ever see the field. Wilson, entering his eight season, has never missed a start.
The last time another quarterback threw a pass for Seattle it came in 2016 and off of the fingers of Trevone Boykin, who appeared in five games and completed 13 of 18 passes that season. Tarvaris Jackson attempted six passes with five completions in 2015 and the year before appeared in one game completing his lone pass attempt. Jackson completed 10 of 13 passes in three games during the 2013 season. Matt Flynn completed five of nine passes in three games during Wilson's rookie season.
At some point, however, Wilson's luck is likely going to run out. Not one of the 26 quarterbacks inducted into the Pro Football Hall of Fame during the modern era went through his career without missing games. Wilson, a virtual lock to one day be enshrined in Canton, Ohio, is on pace to become the first.
It must be pointed out that Green Bay legend Brett Favre set the record for consecutive starts by a quarterback at 238 from 1992 all the way into 2002. That incredible run came to end late in 2002 when Favre, who ended his career with Minnesota, missed a few starts with a shoulder injury at the age of 41.
Could Wilson be another Favre? Maybe. But if Wilson were to go down this season, Seattle would probably turn to Smith or Lynch.