Johnny 'Irish' Lineen comes to mind as a swing player between pocket billiards and 3C. He undoubtedly is reportedly a great player at all pocket billiard games, and of course OP. He went to Johnston City in '61, and of course was the mentor of two great OP players Jersey Red and Ervolino. Jersey Red stated he is the finest player he has ever seen.
In '39 he was on course to win the world straight pool championship beating champion after champion when a bout of pleurisy knock him out. But he continued exhibitions in pool and 3C, he beat Matsuyama running 16 3C billiards. Who is Matsuyama?
In '54 when Harold Worst (age 25) won the world's 3C championship, Irish went to his home and beat him on his own billiard table.
In snooker he could make the spotted 6 ball in the pocket and draw the cb past the side pocket before the cb touched a rail, from the D box.
A Chicago billiard hustler Harry Cohn went to Florida to hustler and Johnny stepped up, and the guy asked; "are you 'Irish', the guy left. Who is Harry Cohn?
I think a slew of players of the 40's, 50's such as Metz, Camp, plus a slew of black players probably had some back ground in 3C also.
It is so hard to imagine that Irish is not somehow in our OP hall of fame.
Carry on, Guys!
thanks, Whitey