 Donnalley was a member of the Houston Oilers from 1991-1996, a member of the Tennessee Oilers in 1997, a member of the Miami Dolphins from 1998-2000, and a member of the Carolina Panthers from 2001-2003.Donnalley was part of the offensive line for the Carolina Panthers in 2003.He anchored the Panthers offensive line that allowed only 26 sacks in 2003, a team record for fewest sacks allowed in a season, and helped Panthers rush for a team-record 2,091 yards, including a team-individual mark of 1,444 yards by Stephen Davis.