ST. LOUIS — No. 1 overall draft pick Sam Bradford agreed to a six-year, $78 million contract with the St. Louis Rams on Friday night, with $50 million in guaranteed money.

The Rams and the former Oklahoma quarterback concluded negotiations in time for the first full-squad workout set for Saturday. The guaranteed money is the highest ever in the NFL.

Bradford is the centerpiece of a rebuilding effort for the Rams, who were 1-15 last year in the first season under coach Steve Spagnuolo and are 6-42 the last three seasons.

Spagnuolo reiterated earlier this week that veteran backup A.J. Feeley is the starter entering training camp. But Bradford, the 2008 Heisman Trophy winner, shouldn’t be on the bench for long.

Marc Bulger, rookie Keith Null and Kyle Boller combined for only 12 touchdown passes all last year. St. Louis trailed the NFL with a 10.9-point scoring average, leaning heavily on Pro Bowl running back Steven Jackson.

Quarterback Matthew Stafford, the No. 1 pick last year, got $41.7 million in guaranteed money on a six-year, $72 million deal with the Lions last year.

Bradford led the nation with 48 touchdown passes in 2008. He played in only three games in 2009 before undergoing season-ending shoulder surgery.

— The Associated Press