Casserly also envisions a trade involving St. Louis -- but not with the Rams' No. 2 pick. Instead, Casserly has the Rams trading their No. 13 pick to Dallas, which would use it to take Pittsburgh defensive tackle Aaron Donald. With what had been the Cowboys' 16th pick, Casserly has the Rams taking another defensive tackle -- Florida State's Tim Jernigan.
Among the other notable takeaways from Casserly's mock draft:
» Casserly thinks Arizona, which picks 20th, and New England, which picks 29th, could be in position to trade their picks. He also thinks Atlanta, which picks sixth, might try to trade up to get a pass rusher.
» Casserly has Auburn offensive tackle Greg Robinson going No. 2 to St. Louis. Robinson is one of three offensive tackles in the top six, one of four in the top 12, one of five in the top 19 and one of six in the first round.
» Casserly has five corners going in the first round, with the first one off the board being Oklahoma State's Justin Gilbert at No. 10 to Detroit. Casserly also has Pittsburgh, Cincinnati, San Diego and New Orleans taking cornerbacks. He notes that San Diego's selection at No. 25 likely "will be a popular pick for those teams needing a quarterback to try to get ahead of Cleveland," which picks 26th.