Running back Jordan Mason left the game in the second quarter with a shoulder injury. He went to the locker room for X-rays, returned briefly in the third quarter, but soon exited again and remained on the sideline.
"Just in case of an emergency, stayed available," Shanahan said. "... He thought he was gonna be alright. He went back in and it just hurt him too much, so he went out, I think that was the first play, and then he was out (on the sideline) just in case of an emergency."
The 49ers will have more details on the severity of Mason's injury after further tests on Friday.
Safety Malik Mustapha started in place of Talanoa Hufanga, who was placed on injured reserve with a wrist injury. Mustapha exited the game in the second quarter and did not return. Shanahan mentioned that the team believes Mustapha sustained a low-ankle sprain, which is less severe than a high-ankle sprain.
After the game, Mustapha discussed his first career interception with reporters.
A 49ers kicker was injured attempting a tackle on a kickoff return for the second consecutive week. Last Sunday against the Arizona Cardinals, Jake Moody suffered a high-ankle sprain. On Thursday, his replacement, Matthew Wright, sustained a shoulder injury.
Shanahan admitted that he probably won't challenge kickers to make tackles anymore.
"I don't know how I feel about that anymore," Shanahan said. "When they break through, and they're the only line left, I would never be the coach that says, 'Just let them score.' But dang, that's two weeks in a row. ... I just hope he's alright."
Tight end George Kittle appeared to be injured during the fourth quarter, briefly heading to the locker room before returning to the game. When asked about the trip, Kittle was lighthearted and evasive in his response.
"I had to go to the bathroom," he joked.
When asked if he was being truthful, Kittle replied, "I don't know. Maybe. Yeah, who knows?"
Cornerback Charvarius Ward, who suffered a knee bruise against the Cardinals, was listed as questionable. He was among the 49ers' seven inactive players against the Seahawks.
When asked how close Ward was to playing, Shanahan explained, "It was close enough to where it was a game-time decision. He went and worked out (in pre-game), and it was close, but couldn't go."
Additionally, left guard Aaron Banks experienced leg cramps during the game and was replaced by Spencer Burford in the lineup.
Related News
More San Francisco 49ers News
-
49ers injury report: Kyle Shanahan shares key updates ahead of Seahawks playoff game
The biggest news out of Santa Clara on Tuesday was that the San Francisco 49ers are opening star linebacker Fred Warner's practice window this week. However, that was just one of several injury-related updates shared by head coach Kyle Shanahan as the team prepares for its... -
Kyle Shanahan shares final updates ahead of 49ers-Eagles Wild Card matchup
San Francisco 49ers head coach Kyle Shanahan spoke to reporters following Friday's practice, providing final updates ahead of the team's Wild Card playoff matchup against the Philadelphia Eagles. Here's everything he said. Transcript provided by the San Francisco 49ers... -
Kyle Shanahan shares 49ers updates ahead of playoff game vs. Eagles
San Francisco 49ers head coach Kyle Shanahan spoke with reporters during a conference call on Monday, two days after the team's 13-3 loss to the Seattle Seahawks, and as the team prepares for its Wild Card playoff game against the Philadelphia Eagles. Here's everything he... -
Rapoport shares 49ers injury updates on Trent Williams, Ricky Pearsall
NFL insider Ian Rapoport expressed skepticism about the availability of San Francisco 49ers left tackle Trent Williams and wide receiver Ricky Pearsall for Sunday's NFC Wild Card matchup against the Philadelphia Eagles. Neither player participated in Wednesday's practice, a...