Reminder of how the Dolphins season played out last year. Phins started 3-0 with Tua throwing 6 TDs against Baltimore in week 2. In week 3 he got the first concussion vs Buffalo but they held on to win. Then he got the second one against Cincy week 4 and the Dolphins lost. With backups in the lineup they lost weeks 5 and 6. Then Tua returned and the ripped off five straight wins against non-playoff teams.
Weeks 12-14 they went on the road to the Niners, Chargers and Bills. Phins went 0-3 and Tua didn't complete more than 57% of his throws in any game. They also lost Week 15 at home to the Packers and Week 16 at New England before squeaking out an 11-6 win against the Jets to sneak into playoffs.
So to answer the question from
@skanless13 about how long Tua can keep this up, it appears to be until they run into a well-coached defense that can expose them. I see several opportunities on their schedule:
1) at Buffalo Week 4,
2) at Philly Week 7,
3) at KC Week 9,
4) at Jets Week 12,
5) vs. Dallas Week 16.
I'll go with Week 4 or Week 12. The Eagles could dominate the LOS but that's not as easy to repeat as a good coverage scheme.