
The San Francisco 49ers have had quite the offseason, and to put it frankly, they probably (above a lot of other NFL teams) are the most eager to get back on the gridiron to get this 2026 campaign underway.
One development throughout training camp was the Niners sustaining a plethora of injuries to their pass catchers, and the uncertainty of George Kittle’s status before Week 1.
Early in training camp, newly signed Christian Kirk sustained a calf injury, which has landed him on Injured Reserve to start the campaign. San Francisco also announced that Isaac Guerendo has landed on the PUP list to begin the season.
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Wide Receiver Christian Kirk to Start Season on IR

As the roster deadline has passed, wide receiver Christian Kirk will begin the 2026 season on the Injured Reserve list with his calf injury, which is now officially more serious than most analysts initially thought.
Kirk will have to miss the first four games of the season, but it’s not believed to be a season-ending injury, so Kirk updates will likely be in the future once the season begins.
As for Kirk, it’s no surprise that the team will be patient with him. It’s one of the benefits of the Injured Reserve. He has experience in ways that Jacob Cowing and Jordan Watkins do not in the NFL as receivers. Plus, Kirk has production. He will add an element to the passing game the Niners have been missing once he returns.
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Christian Kirk’s NFL Career

Christian Kirk is an NFL veteran of eight seasons.
Kirk played in 13 games for the Houston Texans in 2025 and hauled in 28 passes for 239 yards and one touchdown.
Across his NFL career, he’s logged 432 receptions for 5415 yards and 30 touchdowns, which is good for a lifetime yards-per-catch mark of 12.5.
Originally drafted by the Arizona Cardinals, Kirk also spent three seasons with the Jacksonville Jaguars.
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