The 1-2 Chicago Bears will play the 1-2 Las Vegas Raiders at Allegiant Stadium in a Week 4 matchup. Here’s what you need to know before kickoff (3:25 p.m., CBS-Ch. 2).

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For all the Raiders offensive line’s shortcomings in the run game, they’re a monster in protection.

QB Geno Smith has the longest time to throw (3.2 seconds) among qualifiers this season, according to Next Gen Stats. Meanwhile, the Bears’ average time to pressure is 3.06 seconds, third-worst.

Not good.

Defensive coordinator Dennis Allen, who coached the Oakland Raiders from 2012-14, said Smith has speedy receivers and

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