Peelle started nine of the 15 games in which he appeared in 2003. He tallied a career-high 16 receptions for 133 yards on the season, and had one touchdown catch on the year. Peelle also contributed two tackles on special teams. He posted a career-high four catches, totaling 24 yards, against the Baltimore Ravens on September 21. His lone scoring catch of the year came on a seven-yard grab from Brees in the back of the end zone the following week at the Oakland Raiders, marking his first NFL touchdown reception. He was inactive for game at the Detroit Lions on December 7 with a concussion sustained the previous week against the Kansas City Chiefs.