Quarterback John Beck has signed a four-year contract with the Dolphins. The team's other top pick, Ted Ginn Jr., remained unsigned Monday, a day before the first scheduled rookie practice. Beck, a second-round pick, threw for 79 touchdowns and 11,021 yards at Brigham Young. He was the first quarterback selected by Miami in the first two rounds since Dan Marino in 1983. Beck's agent, Justin Schulman, said his client agreed to the deal late Sunday, but declined to release its terms. Ginn, an Ohio State receiver and Miami's first-round choice, remained unsigned. Ginn's agent did not return a phone message.