49ers’ trio of rookie defensive linemen prepare for their meet-and-greet

SANTA CLARA – Three defensive linemen walk into a rookie minicamp …

But seriously, this is no joke. Here comes the 49ers’ new-look, high-valued defensive linemen:

— Mykell Williams, a 6-foot-5, 267-pound defensive end

— Alfred Collins, a 6-5, 332-pound nose tackle.

— C.J. West, a 6-1, 318 pound defensive tackle.

The 49ers’ drafted them in the first, second and fourth rounds, respectively, to not only fill voids on the defensive line but to form a menacing unit...