Smith got his first regular season playing time in the fourth quarter of the home game against the Indianapolis Colts on December 9, 2007, completing three of five pass attempts and scrambling six yards for his first NFL touchdown in the 44-20 loss. After his relative success against the Colts, many Baltimore Ravens fans were calling for Smith to replace Kyle Boller as the Ravens' starting quarterback. On December 16, 2007 Smith came in for an injured Kyle Boller in the game against the Miami Dolphins. Smith led the Ravens down the field for a field goal that forced overtime. The Ravens lost 22-16 in overtime, after a missed 44-yard field goal. On December 20, 2007, Kyle Boller officially was considered the backup due to injury for the Week 16 game, giving Troy Smith his first professional start against the Seattle Seahawks. He completed fewer than 50% of his passes and fumbled twice in this game. The Ravens lost 27-6, scoring a touchdown with about four minutes to play and the game out of reach. In Week 17, the Ravens beat the Steelers with Troy Smith starting again. He went 16-of-27 for 171 yards and one touchdown, with no interceptions and no fumbles lost. This was the Ravens first win since Week 6, ending a 9-game losing streak with a bye at Week 8.