Red Sox Reinstate Triston Casas to Bolster Lineup

After a lengthy injury, Casas returns as Boston aims for a wild-card spot.

Triston Casas activated from 60-day IL following ribcage injury.
Casas hit .244 with 6 homers in 22 games before injury.
Dominic Smith designated for assignment to make roster space.
Red Sox have lost six of their last eight games but remain in playoff contention.
Tyler O'Neill expected to return soon from leg infection.