The Colts will divide first-team practice reps between Tolzien and Jacoby Brissett this week, Zak Keefer of The Indianapolis Star reports.
Tolzien tossed a pair of pick-sixes prior to being removed in the fourth quarter of Sunday's blowout loss to the Rams. Brissett proceeded to lead the Colts' only touchdown drive of the game, albeit with the outcome already determined. The Colts seem to be leaning toward starting Brissett for the Week 2 matchup with the Cardinals, but Tolzien might be able to change the team's mind if he turns in a strong week of practice.