The Indianapolis Colts signed Philip Rivers from their practice squad to their 53-man active roster on Saturday, clearing the way for the 44-year-old coach of the St. Michael Catholic High School football team to start their NFL game against the Seattle Seahawks on Sunday afternoon.

Nearly five years after his most recent NFL appearance, the former Athens High School star and eight-time Pro Bowl quarterback answered the Colts’ distress call this week and, after three practices with the team, will be eligible to lead Indianapolis against the NFL’s No. 2 scoring defense on Sunday. NFL Network and ESPN reported the Colts would have Rivers in their starting lineup.

Rivers’ comeback began by signing with the Colts’ practice squad on Tuesday. Each NFL team has a 16-player practice squad. Its members do everything that the members of the 53-man active roster do except play in games.

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On Saturday, the Colts announced they had signed Rivers to their active roster. Indianapolis had an open spot for the quarterback after it placed former Auburn All-American Braden Smith on injured reserve. The Colts’ right offensive tackle came out of the previous game with a concussion and a neck injury, and he was not able to practice this week.

At his Friday press conference, Colts coach Shane Steichen declined to name a starting quarterback, saying the coaching staff would work toward that decision now that Rivers had completed his preparation on the practice field for Sunday’s game.

During the week, Rivers took snaps with Indianapolis’ first-team offense, as did former Fairhope High School star Riley Leonard.

“He’s got great command in the huddle,” Steichen said of Rivers’ practices. “He was throwing it well. So, yeah, we’re excited for it. I mean, he’s fired up for the challenge, obviously, getting back into it, getting back into the fold. Feeling the pass rush, got some good work in that, just moving around seeing the defense. It was good. …

“I mean, a guy that hasn’t been out there in five years, to go out and practice the way he did this week was pretty impressive to watch.”

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The Colts lost starting quarterback Daniel Jones to a season-ending Achilles-tendon injury in Sunday’s 36-19 loss to the Jacksonville Jaguars and finished the game with Leonard at quarterback. The sixth-round rookie completed 18-of-29 passes for 145 yards with no touchdowns and one interception and ran two times for 5 yards and one touchdown.

In reaction to Jones’ injury, and with backup quarterback Anthony Richardson on injured reserve with a fractured orbital bone, Indianapolis stunned the football world by signing Rivers, who made the most recent of his 256 NFL appearances at quarterback on Jan. 9, 2021.

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Rivers is among the five players in NFL history with at least 60,000 passing yards, 400 touchdown passes and a passing-efficiency rating of 95 or higher, joining Tom Brady, Drew Brees, Peyton Manning and Aaron Rodgers.

Rivers also is among the modern-era semifinalists for the Pro Football Hall of Fame’s Class of 2026. By joining the Indianapolis active roster, Rivers is no longer eligible for consideration. Because players must be inactive for five complete seasons before enshrinement, Rivers won’t be eligible for consideration for the Pro Football Hall of Fame until the Class of 2031, if he doesn’t play beyond this season.

Five players have thrown a pass in an NFL regular-season game after turning 44 years old – Brady, George Blanda, Steve DeBerg, Warren Moon and Vinnie Testaverde.