College football's spring transfer portal window has been open for a week and, with one week left until the portal closes May 1 to undergraduates for the rest of this athletic year, there are some teams that have already impressed -- and some that seem to be falling behind in the early going. Whatever the case may be, there's already been enough action to determine some "Winners" and "Losers" from the last seven days. Colorado is an enigma. On one hand, the Buffaloes are up to their usual business of making a splash via the portal, but there's also been...