Not sure you know
He’s got to be the greatest British tennis player 3 majors and 20 years at the top so you’d have to rank him against the best of British in remaining sports
For me despite how brilliant they are at what they do I couldn’t personally name a Golfer, F1 Driver, Darts player, snooker player and a few more as the greatest athlete
Edit
I’ve just realised that wouldn’t work as you could think 4/5 athletes from the same sport are still better than him
Still think he’s in with a shout of making the top 10 though