Maddon said Baez needs at least 20 at - bats before he will be activated from the disabled list .
Baez jammed his left thumb sliding headfirst into first base March 16 in a Spring Training game .
Maddon said Baez needs at least 20 at - bats before Baez will be activated from the disabled list .
Baez jammed his left thumb sliding headfirst into first base March 16 in a Spring Training game .