Stafford had his chance to nail down the No. 16 Bulldogs' starting job during the three games Tereshinski missed, Richt said.
"If Stafford would have played lights out, it would have been very difficult to take him out of there, but he played about like a freshmen would play," Richt said. "Gosh, the Colorado game we've got to have (Joe) Cox come off the bench to seal the victory."
Stafford still is Georgia's leading passer with 496 yards, one touchdown and four interceptions on 38-of-80 passing. Tereshinski has 272 yards, two touchdowns and two interceptions on 21-of-40 passing.
Stafford is not bothered by coming off the bench, he said.
"I'm having fun," he said. "We're 5-1, and I'm just excited to be part of this team. You have to prepare during the week and you should feel comfortable based on how you prepare."