Giacomo Costa (14 December 1919 - 22 January 2000) was an Italian Australian professional wrestler best known by his ring name, Al Costello. Costello was the first professional wrestler to be nicknamed "The Man of a Thousand Holds" because of his innovative and very technical style. Costello was the creator and original member of the tag team The Fabulous Kangaroos, whose "Ultra Australian" gimmick complete with boomerangs, bush hats and the song "Waltzing Matilda" as their entrance music, existed in various forms from 1957 until 1983. Costello was either an active wrestler, or a manager in all versions of The Fabulous Kangaroos.
In 1975, Costello surprised everyone by returning to professional wrestling as the manager of the team known as "The Love Brothers" (Hartford and Reggie Love). He actually stepped into the ring on occasion as part of special six-man tag team matches. After recovering from his hip surgery, Costello returned to active competition at age 56. The fact that he was able to recover from such a major injury is credited to his almost-fanatical style of healthy living. As a devout vegan, Costello credited his meat-free diet with his recovery, as well as the remarkable shape he was in for a man of his age. Costello reformed The Fabulous Kangaroos once more, this time teaming up with wrestler Tony Charles. The team defeated Dominic DeNucci and Chris Markoff to win Detroit's version of the NWA World Tag Team title, the same title that Costello and Kent had previously held. The Kangaroos title run was short, however, and they lost their gold to "Crazy" Luke Graham and Ripper Collins. In 1977, Tony Charles was replaced by Don Kent and the two reunited for a tour of Puerto Rico with the World Wrestling Council (WWC). In Puerto Rico, The Kangaroos arrived billed as the WWC World Tag Team Champions, once more to give a newly created title legitimacy. They dropped the titles to Carlos Colon and Jose Rivera on 12 March 1977 and remained in the WWC until 1978 chasing, but never regaining, the WWC World Tag Team Championship. After their tour in Puerto Rico ended, Don Kent returned to singles wrestling, and Costello refocused on managing.

Q: Who did he manage?
A: the team known as "The Love Brothers" (Hartford and Reggie Love).
How did his team do?
The Kangaroos arrived billed as the WWC World Tag Team Champions, The team defeated Dominic DeNucci and Chris Markoff to win Detroit's version of the NWA World Tag Team title, professional wrestling He actually stepped into the ring on occasion as part of special six-man tag team matches.
He actually stepped into the ring on occasion as part of special six-man tag team matches.