Bills sign second-round pick Ronald Darby

The Bills have finalized a contract with their final unsigned draft choice. Second-rounder Ronald Darby, a cornerback from Florida State, has signed with Buffalo, the team said Tuesday. The 5-foot-11, 195-pound Darby garnered third-team all-Atlantic Coast Conference honors in 2014, notching 43 tackles and four pass breakups. The lone cornerback selected by the Bills in…