For a quarterback, 7-on-7 work is supposed to be easier than 11-on-11 drills. There is no pass rush. There is no crowd to see over or around. Receivers should win matchups and provide open targets.
In a 7-on-7 drill, he hit Bishop Sankey and then missed on three throws in a row: He missed Hakeem Nicks in the end zone, threw out of bounds to a well-covered Kendall Wright in the back right corner of the end zone and threw a bad pass I think was aimed for Harry Douglas but might have been intended for Delanie Walker behind him.
But in the full team red zone period that followed, Mariota's fuse got re-lit.
A dump off to tight end Craig Stevens created a chance for him to bounce into the end zone. A slant to Douglas for a touchdown. A hard roll out to the right and a dart to Wright at the front corner of the end zone.