Nineteen up, 19 down for Brazilian bantamweight prodigy Thomas Almeida.
A big left hook kicked off an impressive finishing flurry, as the fight was waved off at 4:18.
"I fight very hard, he's a very tough guy and a test and then I was very happy," said Almeida.
It was his 14th career knockout and 18th career finish for Almeida.
"I work very very hard to prepare so much for this fight," Almeida said. "I do fine, I'm very happy to finish the fight."
Jabouin, a Tristar fight, lost for the second time in his past three fights. He's been in a win-one, lose-win pattern over seven fights dating back to 2012.