Who are the most coveted players available this spring? Here are ESPN's rankings of the top talent in the spring transfer portal. The following players have entered the portal or have announced intentions to transfer.

RB Alton McCaskill (R-Sr., 6-1, 205): McCaskill was part of a deep running back contingent. ASU was his third college stop after Houston and Colorado. He was with the team last season but had just seven carries for 17 yards as he was still battling his way through nagging injuries. One year of eligibility remaining.

What many personnel directors across the country figured would be a relatively tame spring portal window has quickly become intriguing.