If Jacobs out, would you play Richard over Mack?

Josh Jacobs isn’t looking good to play and with gamescript Richard should get a hefty amount of work on the ground and catching the ball (providing he’s the lead back). It’s hard to trust Mack after injury and against a hard defense so if Jacobs is ruled out and Richard is expected to be the primary back, would you play him over Mack in a full ppr league?