Castonzo (ankle) announced his retirement Tuesday, Joel A. Erickson of The Indianapolis Star reports.

EDGE Analysis

The 32-year-old contemplated retirement last offseason before re-signing with the Colts on a two-year contract. He apparently won't play the second season, following a 2020 campaign in which he dealt with knee, ankle and oblique injuries, ultimately requiring surgery on the ankle. Castonzo's dozen starts in 2020 brought him up to 144 for his career, spanning the entire Andrew Luck era and then some. The Colts' offensive line otherwise remains strong, but they now have a major hole to address on the blindside. The decision to bring in 33-year-old Jared Veldheer at the end of the 2020 season suggests the team doesn't have much confidence in the likes of Chaz Green or Casey Tucker to replace Castonzo.

Castonzo (ankle) was placed on injured reserve Friday.

EDGE Analysis

Castonzo is scheduled to undergo season-ending ankle surgery, so the shift to injured reserve was only a matter of time. Chaz Green is poised to work at left tackle for the Colts, and Joey Hunt was promoted from the practice squad to bolster the depth on the offensive line.

Head coach Frank Reich said Wednesday that Castonzo will undergo season-ending ankle surgery, Stephen Holder of The Athletic reports.

EDGE Analysis

Castonzo will be placed on IR in the near future. He started 12 games this season and has one year remaining on his contract. Chaz Green is expected to slot in at left tackle for the season finale against the Jaguars.

Castonzo (knee/ankle) has been ruled out ahead of Sunday afternoon's game against the Steelers.

EDGE Analysis

Castonzo appeared to be trending in the right direction upon logging a limited session Wednesday, but a reversal to no participation Thursday seemingly doomed the 32-year-old's Week 16 status. He was able to power through his knee issue to get the start last Sunday versus Houston, but now Chaz Green is expected to man the left tackle spot against Pittburgh's injury-depleted front seven.

Castonzo (knee/ankle) is questionable for the Colts' Week 16 matchup against the Steelers, Andrew Walker of the Colts' official site reports.

EDGE Analysis

Castonzo has dealt with a knee injury since Week 12 but was able to play all 54 snaps against the Texans in Week 15. Though he seemed to be on a positive trajectory, Castonzo reportedly picked up an additional ankle injury in the lead-up to Week 16. He was unable to practice on Friday as a result, leaving his status for Sunday in doubt.

Castonzo (knee) is officially active for Sunday's game against the Texans.

EDGE Analysis

Castonzo came into the game drawing the questionable tag with the knee issue that has hampered his practice time this season. Now healthy, expect the veteran to assume his usual starting left tackle role for Sunday's contest.

Castonzo (knee) is active for Sunday's game at Las Vegas.

EDGE Analysis

Castonzo was considered questionable with the knee injury but has been cleared to play Sunday. The 32-year-old missed one game with the MCL sprain and should reclaim his starting spot at left tackle following the quick recovery.

Castonzo (knee) is officially listed as questionable for Sunday's game against the Raiders, Andrew Walker of the Colts' official site reports.

EDGE Analysis

Castonzo missed last weekend's narrow win over the Texans due to his MCL sprain, but it appears that he has a real shot to return versus Las Vegas. With backup left tackle Le'Raven Clark (Achilles) having been placed on IR, it will be a notable boost for Indianapolis' offense if Castonzo is able to go.

Castonzo (knee) has been ruled out for Sunday's game at Houston, Kevin Bowen of 107.5 The Fan Indianapolis reports.

EDGE Analysis

Castonzo sustained an MCL sprain during last week's loss to the Titans, so it's not much of a surprise he won't be suiting up this weekend. Le'Raven Clark filled in at left tackle against Tennessee and could do so again this weekend.

Castonzo (knee) sustained an MCL sprain and is expected to miss some time, Tom Pelissero of NFL Network reports.

EDGE Analysis

The 32-year-old was able to avoid a serious injury, but the MCL sprain could still force him to miss some games. It's unclear if the Colts are considering a move to injured reserve, which would sideline Castonzo for at least the next three contests.