Just like they had for the third round, the Miami Dolphins had a clear theme for Round 4, and it was all about defensive versatility. In selecting edge defender Trey Moore with the 130th overall pick and linebacker Kyle Louis eight picks later, the Dolphins got two good chess pieces for new head coach Jeff Hafley's vision of a defense with interchangeable parts and multiple looks. "Obviously similar, but different, both versatile pieces," assistant general manager Kyle Smith said after the selection of Louis. "Trey from Texas, versatility. He's aligned in different spots. He's played stack (linebacker). He's played on the edge. He's been a pressure player his whole career that he's been in college ball. So his versatility is playing multi align, stack edge, and has the body and athleticism to play on both third downs and special teams. "Kyle Louis, very similar, versatile piece. We see his third-down value in coverage, very athletic guy can run, play man coverage.…