What he describes looks like exactly what happened. Marisnick made the split second decision to go inside before he started the step when he put his right foot far out to the right. Right before that happened Lucroy moved from the right field side of the field away from right field. Making it look like he was preparing to move back and field a slight overthrow or long hop. When Marisnick started moving his right leg out to push off from and go inside Lucoy was blocking the plate, leaving no obvious sliding lane. This is where Lucroy was when Marisnick's right foot about to move outside so he could push off on it and move inside: At this point is when Marisnick decided to go inside, not sot sure how he could have magically know Lucroy would also be there for him to crush. Notice in the picture Marisnick's right foot is already extended and he already decided to go inside, well before Lucroy was there. Watch the first video here in super slo-mo speed (right click choose 1/4 speed) starting at 2:45. You can see Lucroys body swaying towards the outside, then Marisnick puts his right foot out to move inside, then Lucroys moves inside to field it. https://deadspin.com/jake-marisnick-should-probably-be-suspended-for-this-1836180059 People have this odd notion that the "Posey" rule will magically prevent all injuries and now anytime there is an injury on these plays it must be because the rule was violated. It was not, these things happen, and if the rule didnt exist Lucroy would have been expecting a pounding and would not have been