The Indianapolis Colts are ending their season with a quarterback decision that, on the surface, feels abrupt, but is more deliberate upon closer examination. Just weeks after a surprising return by a familiar veteran, the franchise is pivoting again. Week 18 is revealing more than a lineup choice.
Indianapolis Colts Turn to Youth as Philip Rivers Steps Out of the Week 18 Plan
The immediate explanation comes from a report by Stephen Holder, following media availability with Colts head coach Shane Steichen.
Holder wrote, “Based on today’s availability with Colts coach Shane Steichen, there’s a decent chance the Colts will just have Philip Rivers inactive on Sunday. The Colts will start Riley Leonard and newly signed practice squad QB Seth Henigan will be No. 2. Rivers will make the trip.”
That update clarified the Colts’ plan for the season finale. With the Colts eliminated from playoff contention, the priority has shifted from experience to evaluation. Philip Rivers, who returned at age 44 and started three games, is no longer central to that process.
Instead, the Colts are turning to Riley Leonard, a sixth-round rookie out of Notre Dame. Leonard’s start represents a low-risk opportunity for the Colts to assess how a young quarterback handles game speed and decision-making at the NFL level, even if the standings no longer matter.
Backing him up will be Seth Henigan, an undrafted rookie elevated from the practice squad. Henigan played his college career at the University of Memphis, spent time with the Jacksonville Jaguars, and joined the Colts late in December. While his role may be brief, it reflects the organization’s willingness to explore depth options at the position.
The decision is also supported by broader team performance. According to PFSN’s Offense Impact Metric, the Colts posted an offense impact score of 86.1 during the 2025 season, the second-highest mark in the league. That figure sits well above the league average of 74.5, indicating that the offense has functioned at a strong level despite instability under center.
PFSN assigned the Colts a B grade, ranking the unit second for the season, even as the team’s overall rank landed at 65. That balance suggests the offense is stable enough to support a developmental start in Week 18.
Beyond Sunday, Rivers’ future may still involve the NFL. Ian Rapoport reported that while Rivers’ playing career is again on pause, his return may have sparked interest in coaching opportunities.
From @NFLGameDay Morning: #Colts QB Philip Rivers could garner HC interest this cycle; Meanwhile, the #Vikings start JJ McCarthy today, but likely bring in a veteran QB to add to the room next year. pic.twitter.com/D7j5Z4am2D
— Ian Rapoport (@RapSheet) January 4, 2026
Rapoport wrote that “Several sources say Rivers could end up as a head coach candidate this cycle and the current belief is that Rivers gets at least one opportunity to interview, possibly more.” He noted that teams such as the New York Giants and Tennessee Titans currently have openings.
In that context, the Colts’ Week 18 move looks less like a demotion and more like a transition. Rivers exits the lineup with his reputation intact, while the Colts use their final game to gather answers that could shape its quarterback room moving forward.
