The Seahawks are giving rookie linebacker Shaquem Griffin every opportunity to prove himself in the preseason.
Griffin, the fifth-round draft pick whose left hand was amputated at age 4, played 49 snaps in Saturday night’s preseason game, 37 on defense and 12 on special teams. That total of 49 plays was tied for the most of any player on the Seahawks last night. (Guard Jordan Roos also played 49 snaps.)
It was an up-and-down night for Griffin: He had an outstanding tackle in punt coverage, but he also got called for holding on a punt return. He was in…