Two weeks ago, Tua Tagovailoa, the accurate, athletic and accomplished quarterback from Alabama, seemed destined to be one of the top picks in the 2020 NFL draft. His career earning capacity was projected in the nine figures.Then, during the second quarter of Alabama’s game against Mississippi State, with the Crimson Tide up 35-7 on a third-and-4 play, Tagovailoa was rushed and taken down by Mississippi State defenders. Trainers rushed onto the field with 3:01 left in the half to help the quarterback, who was &ldquo …