No — reliable evidence indicates Sean McDermott is right-handed.

Sean McDermott is an American professional football coach who currently serves as the head coach of the Buffalo Bills of the National Football League (NFL). He began his coaching career in 1999.

Before joining the Bills, McDermott served as the defensive coordinator for the Carolina Panthers from 2011 to 2016 and the Philadelphia Eagles from 2009 to 2010.

He was hired as the Bills' head coach in 2017 and has since led the team to multiple playoff appearances and several AFC East division titles, transforming the franchise into a consistent contender.

McDermott is known for his strong defensive philosophy and his emphasis on team culture and discipline. He played college football as a safety at William & Mary.