Could Flacco's injury finally open the door for Kaepernick?

When a veteran player sits unsigned on the open market well into the summer, the prevailing sentiment is that they'll simply have to wait until injuries strike in training camp.

It's only ever a matter of time in a sport as physical as football, after all.

For the most polarizing player of the year, and perhaps the most controversial free-agent case the NFL has ever seen, that circumstance may have taken shape faster than anyone expected.

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