If we confine ourselves to RG stats which this thread does until you posted non-slam stats

, Thiem's pedigree is unassailable.
You bother with stats breakdowns. You insist that this is important.
I have always disagreed with the way you do things because you look at individual stats and say that one is more important than another. I say that serve and return has to balance so that they add up, and that breakdown stats for 1st and 2nd on serve and return also have to be balanced. It's no good if a player leads on 1st or 2nd stats. They have to add up, and when you look at leaders, they always compliment each other.
So I start with big picture and then work from big to small.
Stats for games tend to be higher in slams than in smaller events. This can go haywire in only one slam, but for a career top players actually win more games in slams than in M1000s. The reason is obvious. Less rounds, so in smaller events players are more likely to get challenged early. Slams get hardest in final rounds for equally obvious reasons.
If you look first at games, you're usually going to be pretty close on points, so 53.5% of points is going to get you around 57% of games. Actually a bit higher on clay for clay specialists, since the ratio is more like 2.25. So I look at Thiem, see 57% of games this year at RG and know that his points are probably a bit lower than 53.5%.
That's probably not good enough to win RG except in a weak year, where Nadal is gone and no one else is dominating.
I have not bothered yet to plot career records in games for top players only at RG, but I can because I have the data. I can tell you without looking that for the best it's going to range around 60% of games or higher because RG winners usually win more games than their average for the clay season.
I can give you a few figures of top clay ATGs.
Borg, around 65% of games at RG, career. You might think his figures are inflated because he went out at the top, but he also has weaker younger years averaged in there, which does not help.
Nadal, 66.07% before this year, so it may actually be a bit higher.
These are ridiculous figures.
Lendl, in contrast, was at around 59% for his career at RG.
So we can't say that someone can't win RG multiple times with at least 60% of games, but you want to see something as close as possible, and you want to see something similar for career, all events. A player can be weak at other events and high in a major, but it's not common and so much less predictable.
There really aren't that many players who have won RG multiple times, and of course Thiem has been incredibly unlucky to be playing in the same era as Nadal. But he's at least lucky that he was not born in the same year or close to it.
Nadal can't continue winning RG forever, and when his body finally gives out it may be sudden and final. So Thiem still has a window.
Finally, here's how you could also look at it:
Djokovic career on clay, 59.07% How will RG compare? I'm about to find out:
Answer, which I did not know until this moment:
59.86%, although I may not have this year averaged in yet, but it won't change much. So there you see that he has a higher game%, even only winning once, than on all clay. That's the way majors work because of the easy early rounds.
Peak years for top clay players are usually over 60% of games, and sometimes wildly so. These peak years do not always coincide with RG wins (think of Coria, and there are others), but it's the norm.
This is why I am not sure Thiem will ever win RG. With his stats, even at RG, he's running out of time. I'm saying maybe a 50/50 chance he will win it in the next couple years or so, but I still don't think he can repeat without some upgrades to his game. He needs better spots on his serve, less DFs, and he has to start winning more return games.
I've been doing this years and it does work rather well as evidenced by Thiem's continued success. You can't call me wrong when Thiem keeps coming up with the goods at RG year after year. I also rated Tsitsipas rather highly for clay this year and he delivered big time from Estoril onwards. (One can argue, but for a heroic Wawrinka effort Tsits would have made RG SF and Tsits had the worst draw of all time at RG which had to demoralize a touch.)
TTW idiots rail on about younger players not getting slam results, but Tsits had Wawrinka, Federer, Nadal, Thiem or Djoko path to the title. That is a ridiculous draw given that Wawrinka and Federer found form once again at RG.[/QUOTE]