When the Blue Team finally disbanded, did not retire. He transitioned seamlessly into professional bridge teaching and writing. He co-authored "The Roman Club System of Bidding," a bible for aspiring advanced players. He also played in seniors' events, winning World Senior titles well into his 70s.

His partnership with Walter Avarelli became legendary. They communicated through a complex system of bids and signals that left opponents bewildered. But it wasn't just the system; it was the synergy. Belladonna was the visionary, often seeing the end of the hand at the first trick, while Avarelli was the perfect lieutenant, executing the plan with precision.

In the pantheon of card games, few names command the same level of respect, awe, and strategic reverence as . While the world knows the legends of poker (Doyle Brunson) or chess (Garry Kasparov), the universe of duplicate bridge has its own undisputed king. For nearly three decades, Belladonna was the hammer of the legendary Italian Blue Team (Squadra Azzurra). To the average person, "bridge" might be a leisurely pastime in a retirement community. To aficionados, Giorgio Belladonna is synonymous with ruthless precision, psychic bidding, and the most famous bidding system ever devised: the Roman Club .