Standout rookie cornerback Upton Stout has made waves with his training camp performance, but the 49ers Faithful will have to wait at least another week to see him make his NFL preseason debut.

Stout missed San Francisco’s 30-9 loss to the Denver Broncos, which 49ers coach Kyle Shanahan clarified was a result of a calf injury while speaking to the media after Saturday’s preseason defeat.

“His calf was tight, we were kind of cautious with him,” Shanahan told reporters.

After being selected No. 100 overall in the 2025 NFL Draft, Stout quickly made an impression his new team with what 49ers general manager John Lynch described as the “best” draft call he has ever been a part of.

Stout’s trademarked enthusiasm quickly translated onto the field as well, with Lynch comparing the fiesty cornerback to his former Tampa Bay Buccaneers teammate Ronde Barber, who is a member of the Pro Football Hall of Fame.

Lynch lauded Stout’s tenacious effort while singing the praises of the rookie defensive back during an interview on KNBR’s “Murph & Markus” Friday.

“That’s just what Upton is all about, he can cover really well and he’s relentless with his effort,” Lynch said Friday on KNBR. Very reminiscent of Fred Warner-type effort and so that shows up. That plays in our league all day long. And so, he’s been really, really good.

With no clear starter in place for the 49ers’ nickel cornerback spot, Stout is in prime position to land a key role on San Francisco’s defense in his rookie season.

Hopefully a speedy recovery will allow Stout to pick up right where he left off upon his return.

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