This alternate Arizona Diamondbacks jersey was worn by Dave McKay for a May 3, 2018 Diamondbacks home game against the Los Angeles Dodgers. The jersey has a patch commemorating the 20th anniversary of the Arizona Diamondbacks.

Dave McKay is a coach in Major League Baseball and is a former professional baseball player. He is from Vancouver, British Columbia. McKay played in Major League Baseball from 1975 to 1982 and has coached in the MLB since 1984. He currently coaches for the Arizona Diamondbacks. He is a three-time World Series Champion, winning as a coach in 1989, 2006, and 2011. McKay was inducted into the Canadian Baseball Hall of Fame in 2001.