Day, 44, rejoins the 49ers as quarterbacks coach, having previously served as San Francisco’s offensive quality control coach for three seasons (2007-09). He spent the past three years (2016-18) as tight ends coach of the Miami Dolphins.
Prior to Miami, Day spent two seasons (2014-15) with the Washington Redskins, working as the team’s assistant offensive line coach. Before his time in Washington, he spent four seasons as a quarterbacks coach, two with the Chicago Bears (2010-11) and two at the University of Connecticut (2012-13). Day worked as an offensive quality control coach for two seasons (2005-06) at the University of Michigan prior to joining the 49ers in 2007. He began his coaching career in the high school ranks, working as a wide receivers coach (2001), quarterbacks coach (2002) and offensive coordinator/quarterbacks coach (2003-04) at Auburn Riverside (Auburn, WA) High School.