Dolphins sign QB Seth Lobato, two others

The Dolphins announced a series of transactions Tuesday morning, including the signing of one rookie quarterback and the release of another. The Dolphins added three players, including Seth Lobato, an undrafted free agent quarterback from Northern Colorado. The 23-year-old Lobato completed 56.6 percent of his passes in his collegiate career (637-of-1126), throwing 53 touchdowns. The…