Raheem Mostert Fantasy Football Replacements: Is Elijah Mitchell Worth Significant Waiver Wire FAAB in Week 2?

The bad news for San Francisco 49ers running back Raheem Mostert just got worse.

Mostert suffered a knee injury that knocked him out of San Francisco's Week 1 matchup with Detroit and was expected to miss around eight weeks after learning that he suffered chipped cartilage in that knee.

That changed on Tuesday afternoon when Mostert revealed that he will have season-ending surgery to repair the injury.

Rookie Trey Sermon, who was a surprising healthy scratch on Sunday against the Detroit Lions, could take on a chunk of the workload with Mostert out, while Elijah Mitchell becomes an interesting fantasy football waiver wire add this week.

The Action Network's Samantha Previte offered her two cents regarding what might be a tough backfield to decipher:

"I would temper expectations for Mitchell or any 49ers running back since it's going to be a weekly dice roll trying to interpret Kyle Shanahan’s smokescreens into lineup decisions. Sermon will eventually play a role in this offense — possibly as early as next week. If you're desperate, Mitchell is worth aggressively bidding for this waiver cycle as he's the most interesting potential pick up of the week. Otherwise, I would save my FAAB for a non-49ers running back in the future."

Mitchell did step in admirably against the Lions in Week 1, finishing with 104 yard on 19 carries, including a 38-yard touchdown run early in the second quarter.

Hasty made the most of his single carry on Sunday, punching in a three-yard touchdown run late in the first half.

San Francisco will travel to Philadelphia in Week 2 to take on the Eagles, who surrendered just six points to the Atlanta Falcons in their season-opener.