Watt underwent back surgery last week .
Watt 's availability for the start of the season is n't a guarantee could have a trickle - down effect on Garoppolo and the Patriots , who host the Texans in a Thursday night game in Week 3 .
Watt underwent back surgery last week and his availability for the start of the season is n't a guarantee could have a trickle - down effect on Garoppolo and the Patriots , who host the Texans in a Thursday night game in Week 3 .