On April 19 , 1972 , he was traded along with Jim Cheyunski and Mike Montler to the Buffalo Bills , in exchange for Wayne Patrick , Edgar Chandler and Jeff Lyman .
Hagen became a starter at left guard in 1971 .
On April 19 , 1972 , Hagen was traded along with Jim Cheyunski and Mike Montler to the Buffalo Bills , in exchange for Wayne Patrick , Edgar Chandler and Jeff Lyman .
Hagen became a starter at left guard in 1971 .