The New York Giants picked Buckley in the third round, 66th pick overall, of the 1993 NFL Draft, and he played for the Giants from 1993 to 1999. In seven NFL seasons, he played in 101 regular season games for the Giants, started 25 of them, and compiled 137 tackles. He was on the Atlanta Falcons 2000 roster, but played no games.
On January 25, 2018, after an investigation by the FBI for ties to a $1.5 million insurance fraud scheme, Buckley was sentenced to 24 months in federal prison. On April 10th, 2013 he was indicted and charged with insurance fraud along with a co-conspirator, Kimberly Jones. The charges allege that Buckley made false workers compensation claims related to stress-related injuries from playing football.