George Kittle is active for 49ers after illness scare, as Mykel Williams prepares for 2026 debut

The 49ers will have tight end George Kittle available after coming down with an illness, according to a report from Yahoo Sports. Kittle is not listed among the team’s inactives, meaning San Francisco’s key receiving and run-blocking option is expected to play in the team’s game against the Seahawks.

For the 49ers, getting Kittle on the field matters beyond his production as a pass-catcher. Tight ends in San Francisco’s offense typically serve as movement pieces in the run game and as mismatch targets in the passing game, so the team’s ability to keep Kittle available can help stabilize their offensive plan when game-week health concerns pop up.

The same report also points to another personnel development for San Francisco’s defensive front. Defensive lineman Mykel Williams is expected to make his 2026 debut, suggesting the team will add a fresh look on the interior and along the line as it prepares to face Seattle.

When a player like Williams returns to active use after a layoff, the effect is often felt in rotation patterns and matchup planning. Defensive coordinators can lean on more diverse gap and pressure looks, and the defensive line rotation can change snap distribution for the group’s established starters and depth players.

Seattle’s opponent-specific preparation will have to account for both changes. If Kittle is fully active, the Seahawks must be ready to defend a tight end who can influence routes and protection schemes. Meanwhile, the 49ers bringing Williams into the mix can alter who Seattle targets in space and which matchups get emphasized at the line of scrimmage.

As with any illness or activation report, the most important item is confirmation through the final game status information and the on-field roles once play begins. If Kittle’s workload is adjusted due to how he’s progressing from the illness, it could shape how the offense uses him early and later in the game. For Williams, his first appearance of the season will also be a point to watch, particularly whether he works gradually into the rotation or is deployed in a more immediate role.