Maguire had been in fine form en route to the final but only potted two balls in the first twoframes as O'Sullivan moved into gear with breaks of 54 and 66 in the opener.
Hamilton is a wonderful big break-builder and crashed home back to back centuries in the opening twoframes of the final before O'Brien turned on the style.
In the first twoframes, the southpaw Guerrero enjoyed some success with his straight left hand, but as always Mayweather calmly figured out his foe as though he were solving a crossword puzzle.