I'm guessing that all 3 will see time at the MLB position, simply due to Belichick preparing them in case of different looks/alignments, as well as emergency situations due to injury. It's certainly an important enough position to the overall defense, that we can't be totally caught off guard when someone becomes injured. I think sometimes we can look into certain things that happen in TC + OTAs and write them off as emergency preparation. Of course there's also many things that may lead to the actual alignments in the regular season as well. We won't really know until we see a handful of games go by in the month of Septemeber. I would expect Collins to play the strong side, Mayo the weak side, and Hightower the middle---but that's just our fan consensus. Belichick may see different talents in those players, and adjust accordingly. I'll have to admit though, that we do have several alignments that could work out quite nicely.