Sumbu Kalambay

In May 1993, at Granby Halls, Leicester, East Midlands, England, Kalabmay lost by unanimous decision to Chris Pyatt in a challenge for the vacant WBO middleweight title.

In 1990, Kalambay regained the European title by defeating Francesco Dell'Aquila, and defended it against Frederic Seillier, both via ninth round stoppages. In 1991, Kalambay had a rematch with McCallum in an attempt to regain the WBA middleweight title, which McCallum won by a close split decision.

In March 1989, at the Hilton Hotel, Las Vegas, Nevada, United States, he boxed undefeated IBF middleweight champion Michael Nunn, being stripped of the WBA belt prior to the bout. Surprisingly, Kalambay was knocked out in the first round with one punch.[1] It was the only knock out loss of his career.

In May 1987 at The Arena, Wembley, London, Kalambay won the European middleweight title by outpointing Herol Graham, who was 38-0 and ranked #1 in the world.

After compiling an amateur record of 90 wins and 5 losses, Kalambay turned professional in 1980. In 1985, he was outpointed over ten rounds by Duane Thomas in Atlantic City, New Jersey, United States. Kalambay won the Italian middleweight title by defeating Giovanni De Marco by split decision, then lost to former WBA light middleweight champion Ayub Kalule by split decision over twelve rounds for the European middleweight title.

At 37, Kalambay retired with a record of 57-6-1 (33 KOs).

Patrizio Sumbu Kalambay (born 10 April 1956) is an Italian former professional boxer who held the WBA middleweight championship. He was born in the Belgian Congo, moving to Italy during his youth, which is where he learned boxing and he still resides. The Ring magazine placed him at #9 on their list of the "10 best middleweight title holders of the last 50 years" in 2011.