QUOTE(JC @ Feb 28 2009, 11:19 AM)

The thing is you want to exclude data, it's just that your exclusions are based on whether they support your point rather than issues of statistical sampling. You want to be able to discount Sampras' losses to Hewitt, Roddick and Safin because he was past his prime while still counting his wins over Becker and Edberg when they were past theirs. You still want to be able to count wins against Alex Corretja before he made it to the top 100 and Andres Gomez when he was 32 and out of the top 200.
I never wanted to discount his losses to Hewitt, Roddick and Safin. I don't know where that's coming from. I acknowledged them and stated how close the H2H records were while admitting it was still a losing record. The obvious point there was that Pete, while past his prime, was still very close with players in theirs although having a losing record...mostly seperated by just one single loss. Unlike the Fed is with Murray. And Murray and the Fed are only about six years apart, not a decade apart.
QUOTE(JC @ Feb 28 2009, 11:19 AM)

I am seeking statistically comparable samples, and I'm willing to do a little normalizing of the data to get them. So if I'm going to look at head-to-heads (and I don't think they're particularly useful anyway), I don't think matches played when the players were at very different stages of their careers are meaningful. Toss 'em all...if that means you don't have a direct comparison between the players (like between Federer and Sampras) then so be it. I'd rather use hypothetical data based on meaningful real data than real data that's meaningless (at least for judging overall careers), like the fact that Gisela Dulko is 2-0 vs Martina Navratilova.
Wow...so don't use actual results at all. Play "let's pretend." Because every match Pete played against a clay court specialist of his time, win or lose, (with the one exception you deemed OK, Kavelnikov) was when the player wasn't at his highest ranking (not even necessarily past his prime) NONE of those ACTUAL RESULTS should count when trying to prove Pete wasn't as horrible as everyone thought on clay. This wasn't even a direct comparison to Federer, it was just to show Pete had better results than people might have thought he did on the surface...but no...all those players were past their prime, or slumping, not at their highest ranking, had a bad day, were injured, etc....so they just don't count when proving Pete didn't suck so horribly on the red stuff.
Damn...there are a lot of W/L records in all the recordbooks everyone needs to rethink, according to you, when comparing players...and not even players of different generations! All those results I had shown that Pete had on clay, you want to disqualify, even though most of those players (except Gomez) WERE in his generation.
I guess the reason I shouldn't be surprised with this level of disingenuousness from you goes back to when I first started posting. While I could certainly receive a few bonehead awards myself (Seles 3-1 over Graf in slams I called "ownership," comes to mind, I'll own that one, and any others) I showed, with actual results, (heaven forbid) how the Williams sisters dominated Hingis from '99 on. (and that's ironically generous, since Hingis was still in her prime and the sisters were still reaching theirs at that point...and according to you, it's only when players are at the top of their games that their results should count)
Your reply? Literally, and I quote: "As to your stats, five of Hingis' losses to Venus and Serena came after the 2001 Australian open when her foot problems began, the year she began to complain of foot problems. So no, they did not dominate her from '99 on."
Seriously, you thought it was OK to just not count all of Hingis's 2001 and 2002 results, because she complained of foot problems.
But what added to the level of silliness was just a few posts above that laughable one, you showed how Seles was 3-12 vs Hingis at the time. (Yup.... all of a sudden H2H actual results were OK to use) Funny, Monica complained of foot problems and other ailments since practically day one of her comeback after the stabbings, so according to the logic above, none of those 15 matches counted, and "no Hingis did not dominate Seles."
Selective disqualification of actual results, and inclusion of others, and retroactive physical excuses wiping out undesired match results.
Very nice.
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Obviously I have no data on Blake vs Nadal on clay (and even on hard courts they haven't played that much), but the contrast in their records on clay makes it really really hard to imagine Blake winning, so I feel pretty comfortable assuming that if they played 30% of the matches on clay, Nadal would win all of them.
And I would have felt close to 100% certain that Hingis would have beaten Majoli at the '97 French, and almost 100% sure at the '91 French that Agassi would have beaten Courier (even with some clay results), yet those "givens" just didn't happen. Weird how record books are written.
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If I'm going to look at how Sampras performed against top clay courters, I don't think records against French Open winners guarantees wins over a quality clay courter. I'd be a heck of a lot more frightened by Novak Djokovic or Nikolay Davydenko on clay right now than Gaston Gaudio.
So someone who won the FO isn't necessarily a quality clay court player, and especially not at the time when so many players focused solely on clay?? Um...OK.
If you want to use your Gaudio example, the only comparable player in my list of FO winners would have been Gomez, since he was 30 and 32 when Pete beat him, as Gaudio is 30 now. The rest of those players were well within Pete's time, including Muster...unless, of course, Rafa isn't within the Fed's time.
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So maybe I'd look at a player's record against players ranked in the top 10 or top 5 at the time of the match (or maybe the ranking 6 months later--probably more accurate) and who had records on clay that were at least comparable to their records on other surfaces.
Again, look at all the records that would get kicked out because of this. Actual results don't count if an opponent isn't in the top 5 or 10 at the time of the match, or within 6 months of the match...and at a time when the clay court champions were almost focusing solely on clay, thus having lower rankings because of it, no less.
Wow.
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You keep saying how Sampras played in a much more competitive generation...well, that's your opinion. One could argue that unlike Federer, Sampras did not have any player who was dangerous on all the big stages throughout his career (for that matter, Sampras wasn't all that dangerous himself on one of the four biggest stages). Agassi comes closest, but even he was up and down, there was nobody with Nadal's consistency.
Agassi was an all-court threat for many years, even if he went away around the Brooke Shields time. And you're conveniently forgetting how strong Jim Courier was at all the slams in '91, '92, and '93, let alone a boatload of clay-court specialists thrown into all those years.
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As to the rest, Becker and Edberg were past their prime when Sampras hit his...Krajicek was closer to being a true rival through the prime of his career than they. The reality is that Sampras played as many major finals against Cedric Pioline as he did against Becker and Edberg combined. And I still don't see why having a poor record against a very good, not great player like Krajicek is better than having a poor record against an all-time great like Nadal. If Federer were 2-6 against Roddick (as Samp was against RK at the same age), but had a winning record against Nadal, would that make him better?
A 6-4 record with Krajicek, it's a losing record, for sure, with only 10 matches as its total over many (seven) years, yes, but Krajicek won Wimbledon, he's won a slam. What does that say about Federer being 2-5 (2-6 counting China exhib) against Murray, when Murray hasn't even won a slam yet?
And yes, having a winning record against a much better player who has many more slams and titles where the number of matches played over a longer period of time is much more statistically and realistically significant than having a losing record player to someone you've played much less over that time span who possesses just one single slam.
Pete being (20-14) vs Agassi and (16-4) vs Courier (10-3 if you want to throw out from '95 on, and I just know you do since Courier wasn't in his prime anymore

) while being (4-6) vs Krajicek is absolutely better than the Fed being (6-13) vs Nadal and (2-5) with Murray and (16-2) vs Roddick. Yes-sir-ee-Bob, the Fed would be delighted to be hypothetically (13-6) vs Rafa and hypothetically (4-6, or 2-6, even) vs Andy Roddick, or Andy Murray, for that matter, seeing as how Rafa has 6 slams and Roddick has 1 and Murray has, um, 0.