[6] Mario Celotto met Julia Lendl, who played track and volleyball at USC, and married her after she graduated with a degree in physical education.
[5] His younger son, Tonio Dante Celotto, played college football at the University of Oregon in the 2007 and 2008 seasons and graduated from Piedmont High School in 2007.
[4][7] After Julia divorced Mario, he married Deirdre Taylor Haizlip, group account director at Carol H. Williams Advertising.
Their wedding took place on May 21, 2005 at Charlotte Amalie, United States Virgin Islands and officiated by The Rev.
[8] On February 4, 2011, arranged by the Silicon Valley Education Foundation, Celotto visited a physics class in Yerba Buena High School in San Jose, California to demonstrate how Newton's laws of motion apply to football.