Entering training camp, Tannehill was perceived as a raw, inexperienced quarterback stuck behind two quality veterans. Wilson, meanwhile, was perceived as a physically limited quarterback stuck behind a big-money free-agent signing (Matt Flynn).
However, both clawed up their way up the depth chart and never looked back. Tannehill and Wilson have proven to be skilled and poised beyond their years, and, more impressively, have defied all odds to keep their teams alive in the playoff hunt.
Although Miami's playoff hopes are fading after a three-game losing streak, Seattle currently holds one of the NFC Wild-Card slots.
So, the Dolphins' season is essentially on the line this Sunday.
How can Tannehill outshine his fellow rookie and keep Miami's playoff hopes alive?
Here are 10 keys.