In 2003, he started 14 games, recording 97 receptions for 1,426 yards and 38 touchdowns. He finished the season ranked ninth in the league in receptions, eighth in receiving yards and fourth in scoring (234 points). He was placed on Injured Reserve and missed the season's final two weeks with a dislocated left wrist suffered on the final play of the team's overtime loss against the Predators. He caught a season-high 11 passes for 128 yards and two touchdowns on the road against the Las Vegas Gladiators. He was named the AFL's Offensive Player of the Month for February after catching 30 passes for 475 yards and 15 touchdowns in four games during the month. Harrell was voted MVP of the Game in Colorado's first game in franchise history, February 2 against the Force. He recorded eight receptions for 135 yards and five touchdowns.