2003 Indianapolis Colts season
The 2003 Indianapolis Colts season was the 51st season for the team in the National Football League and 20th in Indianapolis. The Colts improved on their 10–6 record from 2002, going 12–4 and reaching the postseason for the second straight season. After the season, quarterback Peyton Manning was named league MVP along with Steve McNair of the [2003 2003 Tennessee Titans season|Tennessee Titans season|Tennessee Titans].
After defeating the Denver Broncos and the [2003 2003 Kansas City Chiefs season|Kansas City Chiefs season|Kansas City Chiefs] in the first two rounds, the Colts advanced to their first AFC Championship Game in eight years, losing to the eventual Super Bowl champion [2003 2003 New England Patriots season|New England Patriots season|New England Patriots] in the first of five playoff meetings between Tom Brady and Peyton Manning. This was the final season that the team wore blue facemasks on the helmets.
Offseason
Undrafted free agents
| Player | Position | College |
| Tom Arth | Quarterback | John Carroll |
| Gary Brackett | Linebacker | Rutgers |
| Anthony Floyd | Safety | Louisville |
| Aaron Moorehead | Wide Receiver | Illinois |
Regular season
Schedule
Note: Division opponents in bold text.Game summaries
Week 1: at Cleveland Browns
The Colts had high expectations leading into the 2003 season, and hoped to start the season on the right track after a humiliating loss the New York Jets in the 2002 AFC Divisional Playoffs. Peyton Manning struggled for most of the game, throwing two interceptions in the first half. Kelly Holcomb and the Cleveland Browns suffered from similar problems, however, as Holcomb twice drove the Browns inside of the Indianapolis ten yard line, but failed to score a touchdown on either drive. With the game tied 6–6 in the fourth quarter, Manning flawlessly drove the Colts from their own 8 yard line to the Cleveland 25, the highlight of the drive being a 15-yard connection to wide receiver Reggie Wayne on a 3rd and 10 situation. With six seconds left, coach Tony Dungy called timeout and sent in kicker Mike Vanderjagt to attempt the game-winning field goal, which he connected on. This kick was Vanderjagt's first game winner since being labeled as an idiot kicker by Manning in the offseason after charging that Manning needed to show more emotion in games.Week 3: vs. Jacksonville Jaguars
After being down 3–0 at halftime, the Colts scored 17 third quarter points followed by six points in the fourth quarter to beat Jacksonville 23-13 and improve to 3–0. A standout moment from the game occurred when Colts' rookie DB Mike Doss caused a fumble by Jaguars' RB Fred Taylor. Doss reportedly quipped, "Hey, Fred, you forgot something." In retaliation, Taylor told reporters ahead of their next encounter, "I'm going to bust his. I'm going to punish him."Week 4: at New Orleans Saints
The Colts offense was nearly flawless as Peyton Manning and Marvin Harrison hooked up six times for 158 yards and three touchdowns. Harrison accounted for half of Manning's 308 passing yards while Ricky Williams, Marcus Pollard, and Dallas Clark threw in good receiving days as well. The Colts rushing attack was not as strong without Edgerrin James but Indianapolis still picked up 101 yards on the ground.Week 5: at Tampa Bay Buccaneers
In Tampa on Monday Night, the Bucs scored 21 unanswered points and held a 35–14 lead with 5:09 remaining. The game began to change hands when Brad Pyatt returned the ensuing kickoff 90 yards. James Mungro scored a short touchdown, the Colts recovered an onside kick, and Peyton Manning threw a touchdown to Marvin Harrison to cut the lead to a touchdown. With 35 seconds left, Ricky Williams scored a touchdown from 3 yards out to tie the game. With four minutes to go in overtime, Mike Vanderjagt missed a potential game-winning 40-yard field goal wide right, but it was called back by a rare leaping penalty when Bucs DE Simeon Rice landed on his own player. Vanderjagt's ensuing 29 yard attempt was blocked, but kept going and bounced off the right upright and through the posts.Week 10: at Jacksonville Jaguars
By the start of the fourth quarter, the Jaguars rallied with two touchdowns to take the lead. On the next possession, Peyton Manning connected with Marcus Pollard, who raced 70 yards to set up a go–ahead field goal. The Jaguars then moved deep into Colts' territory, but a fumbled field goal snap by punter/holder Mark Royals thwarted their efforts. After the Colts went three–and–out and a strong punt return set Jacksonville up at the Indianapolis 31–yard line, Fred Taylor made a 32–yard run, evading Mike Doss as he fell, to score a touchdown and put the Jaguars ahead with just a minute remaining. Manning's attempt to respond ended in an interception, sealing the Jaguars' first–ever victory over the Colts in a surprising upset. After the game, Doss remarked, "I guess you'd have to say he got the final word today." Taylor expressed that his frustration arose from Doss forcing his head to the ground after he recovered the fumble, expressing "I felt he truly disrespected me,"Week 13: vs. New England Patriots
The Colts hosted the Patriots in the first meeting between the two clubs since October 2001 and the first meeting since divisional realignment took the Colts out of the AFC East into the AFC South. With both teams at 9–2 it was the latest in a season in which two teams with no more than two losses had ever met. The Patriots opened up with a flurry; an Adam Vinatieri field goal was followed by the sacking of Peyton Manning and a fumble recovery, followed by a Mike Cloud rushing score. Dedric Ward then caught a 31-yard Tom Brady touchdown throw for a 17–0 Patriots lead. Peyton Manning led two scoring drives that left the score 17–10 New England with 12 seconds in the first half, but on the ensuing kick to end the half Bethel Johnson ran the ball back for a 92-yard touchdown.The Patriots increased their lead to 31–10 on another Cloud rushing score, but the tide turned decisively as Brady threw two picks late in the third quarter; Manning completed a 13-yard touchdown to Reggie Wayne on fourth down, then found Marvin Harrison for a 23-yard score. A six-yard Troy Walters touchdown catch in the fourth tied the game at 31, then Bethel Johnson had another huge kickoff return, setting up a 13-yard Brady to Deion Branch touchdown. Kevin Faulk was then steamrolled in the Pats' redzone and fumbled the ball, leading to a 29-yard Mike Vanderjagt kick and a 38–34 Patriots lead. The Patriots were forced to punt in the final minutes and Ken Walter laid a huge egg as his punt landed at the 50. The Colts drove to the Patriots 2-yard line entering the final minute and Patriots linebacker Willie McGinest suffered a momentary leg injury that necessitated stopping the clock. On first down Edgerrin James was stopped at the 1; on second he was stopped and Manning called the Colts' final timeout; on third he threw to the left side of the endzone but the ball sailed over everyone's heads; finally on fourth with 15 seconds remaining James was stopped at the 1 by McGinest, Ted Washington, and Rodney Harrison. The 38–34 thriller left the Patriots shaken and left them 10–2 and the Colts 9–3.
Postseason
| Round | Date | Opponent | Result | Record | Venue | Recap |
| Wild Card | January 4 | Denver Broncos | W 41–10 | 1–0 | RCA Dome | |
| Divisional | January 11 | at Kansas City Chiefs | W 38–31 | 2–0 | Arrowhead Stadium | |
| AFC Championship | January 18 | at New England Patriots | L 14–24 | 2–1 | Gillette Stadium |