Sure the match may have been fixed. But did Trafficante Marcello and Ragano meet about it in late 1972, early 1973 at the Palma Ceia? Doubtful.
Ragano never mentioned it in his book , never mentioned it to Selwyn Raab or Nick Pileggi and his son denies it. Ragano spilled the beans on everything else, why not this, especially back then when it was more relevant?
And Trafficante spent most of 1972-1974 out of the country. Example below. Marcello certainly came to Tampa to meet with Trafficante and vise versa, but I would think a visit in 1972 would come up somewhere on a surveillance report.
It's not impossible , just unlikely.