With no spring transfer portal window in 2026, college football rosters for the upcoming season are mostly finalized as of mid-May— barring any extreme cases . That means it’s time to take a look at the most important position on the field for the sport’s top programs: the quarterbacks.  Spring ball is now complete, and with the insight we’ve gained from a busy offseason and early practices, Sports Illustrated will project every Power 4 starting quarterback, as well as a handful of Group of 6 signal-callers over the next couple of weeks. We’ll also include a confidence meter, based on how certain we are that the named quarterback will be the one who trots out on to the field for his team in Week 1.  Earlier this week, SI projected all 18 Big Ten signal-callers in 2026 . Now, it’s on to the ACC as the league hosts its spring meetings this week.…