Career Slam, for instance?
What if say Dimitrov bags one? How about Coffin?
Before the big four JUST Agassi had won it - Open Era.
To have Dimitrov, Coffin etc. join the club should achieve above don't you think - at least on paper?
How about Calendar Slam?
Considering how pathetic the landscape is, is it too much of a stretch to visualize it. JUST one clown has to rise barely past mediocrity to get there, right?