Summary
Wilder was making his first defense of the title he won in January, when he became the first American since Shannon Briggs in 2007 to claim a piece of the heavyweight world title.
The 29-year-old American improved to 34-0 with 33 wins inside the distance.
His unanimous decision over Bermane Stiverne for the title on Jan. 17 marked the only time he's been taken a full 12 rounds, and Saturday he lived up to his pledge to get back to the business of knockouts.
A straight right from Wilder spun Molina around, with the following blows sending him sprawling and prompting referee Jack Reiss to signal that the fight was over at 1:03 of the round.
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