BROOKLINE - At around 11:15 on Tuesday morning, the Dexter Southfield football field was filled with gym classes playing Spikeball and some soccer. By 11:30, over 120 college coaches flooded the field as DXSF held its Showcase Day as part of the massive circuit being held around Connecticut and Massachusetts the last two days. Some elite programs - including BC - were on hand to watch the 25 players go...