yikes...
What a hot bed this thread has generated...let me throw more gasoline on it
1) Connors "ineptness" on red clay? Well, not his best surface, but inept is an awfully strong word there...he had some very good wins at RG when he started playing...made the semis 3 or 4 times, as I recall. Not to mention going toe-to-toe with Chang in 1991..to this day, I find that match scary...Connors was nearly 40 and playing at Chang's level on the red stuff. We'll never know if he would've taken out Borg there during his prime years...that ban was a disgrace...'76 USO final suggests "maybe", but really not a definite.
2) In the 70's and early 80's, it is fair to say the both AO and RG fields were a bit spotty...particularly at the AO. Many of the men just did not want to be bothered going over there to play on grass in December...this does not mean that the fields were bad, just that some of the very top guys didn't care about it that much. The emphasis really was on the USO and Wimby, for whatever reason.
3)Agassi and Mac are such totally different players. But, I'd advise all of you Agassi fans to go watch Mac from 1984...aside from the RG fiasco, he was simply amazing...Federer-like. His destruction of Connors in the Wimbledon final was off the charts...and Connors was playing quite well heading into that match. He then took Lendl apart at the USO final. He lost very few matches that entire year...he was just that dominant.
4) Their skill sets are so different as well...would Mac's serve outweigh Agassi's skill returning and playing baseline? Maybe....if he could keep the serve away from Andre. I think it would be a lot like a Mac v. Connors match, with the typical ebbs and flows. I could see Mac at his very best cutting thru Andre....he would just keep the ball away from him and the rallies, if any, very short.
5)On basis of entire career, all events, Davis Cup and dubs included, you have to pick Mac. Plus, 3 wimbledons and 4 US Opens will always be more highly regarded than the agassi's portfolio w/4 AOs in it (sorry, but true). And while Andre had to deal with Sampras, I think that is offset by the trio of Borg/Connors/Lendl....incredibly tough customers across a wide range of surfaces.
6)I do think both Agassi and Mac wasted a lot of their talent during their non-productive "head case" years....Agassi "came back" from what was a non-starter of a career frankly.....his '92 win at Wimbledon was a shocker...
in terms of entire career, Agassi kind of aligns with Connors...success across multiple surfaces, similar skills, good longevity...got the fans behind them firmly in their later years... [you can argue about which one of these 2 are "better" in another thread!]
While I am a big Andre fan, all in all, tho', the nod goes to Mac.