He represented his native country in three swimming events at the 1984 Summer Olympics in Los Angeles.

[2] Before joining the University of Alabama, Davidson swam for his native New Zealand at the 1984 Olympics in Los Angeles where he posted top-16 finishes in the 400 and 1500-metre freestyles.

[1] A distance ace and team captain for the University of Alabama during the late 1980s, Davidson earned All-American honors in the mile and helped lead Alabama to the 1987 Southeastern Conference team title under the direction of legendary UA coach Don Gambril.

[1] Davidson is married to Jennifer Brothers, who was also an Alabama All-American swimmer, and was part of the women's 1985 SEC championship team.

[4] In July, 2014, he accepted a position as Program Director and Head Coach for the Birmingham Swim League.