By Shawn Childs After strong finish to his rookie season, St. Brown could be a top 12 fantasy receiver. My two most critical takes about Lions receiver Amon-Ra St. Brown in 2021 were his ability to get open and catch the ball. His role in the Lions’ offense was minimal in most of his first 11 games (39/352 on 52 targets). Detroit shifted the bulk of their passing attack to the rookie over the last six games (10/86/1, 8/73, 8/90/1, 9/91/1, 8/111/1, 8/109/1) while receiving double-digit targets (67 total) in each contest. He finished with an impressive catch rate (75.6). St. Brown brings early r…