Popsugar Entertainment Alan Ruck Who Plays Sierra's Dad in Sierra Burgess Is a Loser? Sierra Burgess's Dad Is So Much More Than, Well, Sierra Burgess's Dad 11 September 2018 by Amanda Prahl View On One Page Photo 1 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Class (1983) Previous Next Start Slideshow Alan RuckSierra Burgess Is A LoserMovies