The Ravens have added a quarterback to the roster, but not the one everyone was waiting on. One day after coach John Harbaugh admitted that the team has interest in Colin Kaepernick, the Ravens have signed former arena league signal caller David Olson. 
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Signing Olson doesn’t necessarily slam the door shut on Kaepernick given the amount of roster tinkering that goes on this time of year, but the the Ravens now have three healthy arms in camp while Joe Flacco heals up from a minor back issue. The Ravens could theoretically circle back to someone like Kaepernick if they want to push Ryan Mallett or Dustin Vaughan, but by that point Kaepernick would be late to the party with only a few weeks to go before Week 1.
Olson, a Stanford product, was buried behind Andrew Luck, Josh Nunes, and Kevin Hogan while in college. He has only three passes in live NCAA action to his credit.