Felix Verdejo hit Antonio Lozada with the whole kitchen on St. Patrick's Day at The Hulu Theater at Madison Square Garden, but the unheralded Mexican took his best punches like they were nothing.
It came back to bite him as the Puerto Rican suffered the first loss of his professional career, losing by 10th-round knockout as the ringside doctor halted the action with just 23 seconds left in the fight.
The bout was scheduled for 10 rounds.
Two scorecards had Verdejo ahead, 87-84, and 86-85, while the third card had Lozada winning 86-85.
Verdejo (23-0, 15 KO's), 24, was fighting for just the second time following a motorcycle accident in 2016 that left him with a head injury and small lacerations.
Verdejo got off to a hot start, but his punches did not deter Lozada, who continued to bull his way forward.
Lozada (39-2, 33 KO's), 27, of Mexico, connected on a powerful right hand in the fifth round, wobbling Verdejo, who had to clinch to avoid a knockdown.
Verdejo fired back, but Lozada cut off the ring effectively, and kept popping his opponent with short punches.
The marks began to show on Verdejo's face, with blood pouring from his mouth, and major swelling developing on the left side of his face.
Verdejo was saved by the bell in the seventh round after another onslaught from Lozada left the former prized prospect out on his feet.
With little answers, Verdejo swung for the fences in the final round and got beaned. Lozada landed a left hook and dropped Verdejo with a right hand halfway through the round.
Verdejo rose before the count of 10, but Lozada nailed him with another massive shot, and the referee mercifully stopped the fight.