49ers Running Back Isaac Guerendo has a Foot/Ankle Sprain

The 49ers could be down to their fourth-string running back this Thursday when they face the Rams.
Dec 8, 2024; Santa Clara, California, USA; San Francisco 49ers running back Isaac Guerendo (31) runs the ball against the Chicago Bears in the third quarter at Levi's Stadium. Mandatory Credit: Cary Edmondson-Imagn Images
Dec 8, 2024; Santa Clara, California, USA; San Francisco 49ers running back Isaac Guerendo (31) runs the ball against the Chicago Bears in the third quarter at Levi's Stadium. Mandatory Credit: Cary Edmondson-Imagn Images / Cary Edmondson-Imagn Images
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The 49ers could be down to their fourth-string running back this Thursday when they face the Rams.

Christian McCaffrey and Jordan Mason both are on Injured Reserve, and now Isaac Guerendo has a foot/ankle sprain that he suffered in the fourth quarter of the 49ers' 38-13 win over the Chicago Bears, according to head coach Kyle Shanahan.

"We'll evaluate him over the next few days and see if he has a shot," Shanahan said Monday on a conference call.

Doesn't sound too promising.

"He has an ankle sprain," Shanahan explained. "Definitely couldn't go today. We'll see if he can go on Thursday. It's a quick turnaround, so we have to evaluate him hard each day. I will be surprised if he does much tomorrow, but hopefully Thursday will be enough time for him."

If Guerendo can't play this Thursday, the 49ers will start their fourth running back of the season -- Patrick Taylor Jr., whom they signed this offseason. Taylor spent the first three seasons of his career with the Packers.

"We look for guys who have the ability to make our team," Shanahan said when asked what drew him to Taylor. "And in order to have the ability to make our team, you have to have the running skills that we like to where if we feel if your opportunity ever comes that you're going to be a tough runner who hits the right holes and fights for yards. And also if you can't make one of those top two positions, how well you can do on special teams. He had done both of those things in his career in Green Bay and he has been doing them for us since he got here. If Isaac can't go, it will be his opportunity. And as you guys saw him run yesterday and earlier in the year in Seattle, he's a solid, good back."

In four seasons, Taylor has just 311 rushing yards and 2 rushing touchdowns.

Get well soon, Isaac.

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Grant Cohn
GRANT COHN

Grant Cohn has covered the San Francisco 49ers daily since 2011. He spent the first nine years of his career with the Santa Rosa Press Democrat where he wrote the Inside the 49ers blog and covered famous coaches and athletes such as Jim Harbaugh, Colin Kaepernick and Patrick Willis. In 2012, Inside the 49ers won Sports Blog of the Year from the Peninsula Press Club. In 2020, Cohn joined FanNation and began writing All49ers. In addition, he created a YouTube channel which has become the go-to place on YouTube to consume 49ers content. Cohn's channel typically generates roughly 3.5 million viewers per month, while the 49ers' official YouTube channel generates roughly 1.5 million viewers per month. Cohn live streams almost every day and posts videos hourly during the football season. Cohn is committed to asking the questions that 49ers fans want answered, and providing the most honest and interactive coverage in the country. His loyalty is to the reader and the viewer, not the team or any player or coach. Cohn is a new-age multimedia journalist with an old-school mentality, because his father is Lowell Cohn, the legendary sports columnist for the San Francisco Chronicle from 1979 to 1993. The two have a live podcast every Tuesday. Grant Cohn grew up in Oakland and studied English Literature at UCLA from 2006 to 2010. He currently lives in Oakland with his wife.