The NFL Preseason continues with Week 3 concluding Sunday night with the Minnesota Vikings taking on the San Francisco 49ers at 8:00 p.m. ET.

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Via ESPN:

Desmond Bishop remembers it well: how helpless he felt sitting out of the Green Bay Packers' 45-31 loss in the NFC divisional playoffs, watching as Colin Kaepernick shredded the Packers' defense for 579 yards with an offense that Bishop, now a member of the Minnesota Vikings, said his old team wasn't ready to face.

"I remember a lot of confusion," Bishop said. "We really weren't prepared for it. That was really his coming-out party."

Kaepernick's performance against the Packers sent talk about the read-option offense to a fever pitch around the game. And even if Bishop didn't get the experience of facing Kaepernick -- he missed all of last season with a torn hamstring -- the game ensured he and the rest of the league would be studying it plenty before this season.

The Vikings haven't played San Francisco since Week 3 last season, when Alex Smith was still the quarterback. And other than a Week 6 loss to the Washington Redskins -- where Robert Griffin III passed for 182 yards and ran for 138 more -- the Vikings' defense has yet to see a heavy dose of the read-option.

That will change this season, when Minnesota faces four teams in a nine-week span that are all likely to run some form of the read-option. That means their third preseason game against the 49ers and Kaepernick -- a game in which both teams' starters will likely play the entire first half -- might double as a refresher course on the NFL's trendiest offense.

Coach Leslie Frazier visited with Chris Ault, Kaepernick's college coach at Nevada, this offseason to learn more about the offense. The Vikings can study their game against the Redskins last season, in which Griffin broke loose for a 76-yard touchdown, and the few instances they saw Seattle's Russell Wilson running read-option plays against them last November.