Rookie 49ers nickel back Upton Stout has faced several talented wide receivers during the 2025 NFL season.

But who has posed the toughest matchup for the Western Kentucky product thus far?

Stout shared his answer with former San Francisco cornerback Richard Sherman on Wednesday’s edition of “ The Richard Sherman Podcast. ”

“The toughest receiver? I’d probably say … probably my first game [against Seattle Seahawks veteran] Cooper Kupp ,” Stout told Sherman. “Just because of the amount of positions he was put in.

“You know, I had missed the preseason for an injury. So this was really like my first time in real game action. … We were calling man … Just how savvy he was trying to run his routes and things like that.”

Stout, whom the 49ers selected with the No. 100 overall pick i

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