A "blowout" means a sudden and powerful release or burst of something, often referring to a tire exploding or a sporting event where one team wins by a very large margin. Full definition
«Although the sale of Brazilian Blowout in California violated five separate state health, environmental and consumer laws and resulted in numerous acute injuries, we have not been able to get it off the market,» DiBartolomeis said. (scientificamerican.com)
Like Ohio State, just lots of blowouts of mediocre teams... albeit without losing at home, losing to an unranked team, losing by more than two scores, or doing all three, as Ohio State did. (sbnation.com)
Mike Leach is pretty much the best air raid coach ever, and even he's seemed to peak at like 8 - 9 wins with blowout losses against every half decent defense his team faces (sbnation.com)