Jhonny Gonzalez of Mexico City stopped Australia's Jackson Asiku in the fifth round Wednesday night to capture the IBO featherweight title.

In the fifth, Gonzalez put together a flurry of punches to the head that forced the champion into the corner and rendered him helpless.

Gonzalez, the former WBO bantamweight champion, dropped Asiku with a series of combinations to the head in the fourth round and with left hooks to the head two times in the fifth.

Asiku was transported to a hospital for examination after the bout.

Gonzalez improved to 46-7 with 44 knockouts, while Asiku feel to 26-4 with 14 KOs.