For the past 13 seasons as the Greyhounds' defensive coordinator, Dwan has helped the Greyhounds become one of the most formidable defenses in the nation.
A 1995 graduate of Loyola, Dwan has shaped the Greyhounds' defense into one of the premier units in the nation, and his work with Loyola's rope unit has also led to a stellar transition game and play from the defensive midfield.

During Loyola's run to the 2012 NCAA Championship, the Greyhounds first, Dwan's defense finished fifth in the nation, allowing just 7.51 goals per game. He directed a pair of goalkeepers who had never started a collegiate game and close defense that had lost an All-ECAC performer to graduation.

The Greyhounds not only allowed a shot percentage of just .241 during the year, but they caused 127 turnovers and forced a total of 304 miscues by opponents.

On Championship Weekend in Foxborough, Mass., Loyola's defense set a pair of impressive records. The Greyhounds limited Maryland to a Championship Game-low three goals, and Loyola allowed a combined eight goals in the semifinal and title game after yielding just five to Notre Dame.

Four of Loyola's defensive players earned USILA All-America honors in 2012 - long-stick midfielder Scott Ratliff, defensive midfielder Josh Hawkins and defenders Joe Fletcher and Reid Acton - and Ratliff was named the ECAC Defensive Player of the Year.

During the season, Ratliff set a school record in scoring by a pole with 12 goals and 19 points, breaking the record Dwan set as a senior with 11 goals and 16 points.

That quartet of defenders returned to the team in 2013 and also earned USILA All-America honors. Fletcher was tabbed the ECAC Defensive Player of the Year, and Ratliff earned ECAC Specialist of the Year recognition. The duo also were named First- and Second-Team All-Americans, respectively.

In 2014, Loyola again had one of the most formidable defenses nationally, as the Greyhounds went undefeated in the Patriot League during their first season in the conference. The unit was second in the nation in ground balls per game (36.0) and fourth in scoring defense (7.47).