Yes, that additional spin is really why players can serve heaters with more regularity these days. In terms of max potential mph no pro worth his salt is going to do much worse with a woodie than with a graphite or any other type of racquet.
165-170 is obviously hyperbole and even that 153 mph is questionable , but there's no question yesterday's biggest servers were up there with today's in top-end speeds. In Tanner's case we don't even need to guess because as
@pc1 has pointed out he was out-serving the biggest active bomb-throwers in the early '90s despite being several years into his retirement. And I've heard numerous firsthand accounts from longtime fans/coaches who said Denton (despite his unusual and now illegal motion like that of a volleyball server) served hardly less big than Roddick or Karlovic.
Also there's good reason to question some of the
modern serve records themselves. Compare
this serve by Dent ("only" 148 mph) with
Groth's (164),
Karlovic's (156) or
Roddick's (155) "record"-breaking one and you'll see why. And FYI we should be especially careful when comparing those DC readings with generally less eye-popping readings at pretty much any other event. I explain why here:
And
@slice serve ace provides a few additional reasons for skepticism here:
http://tt.tennis-warehouse.com/inde...dal-in-their-prime.379222/page-3#post-5657924
http://tt.tennis-warehouse.com/inde...ght-against-ana-ivanovic.508031/#post-8599343
So it's quite possible those 148ish-mph serves by Roddick were faster than his "record" 155-mph bomb or the other top-place serves on the list. Don't be fooled by the numbers. The likes of Dibley, Tanner, Denton, Bobo, Goran and Krajicek would easily be topping 140 and approaching if not breaking 150 mph today.
Yes, it was largely that biggest weapon of Goran's that prompted Pete to admit that his main rival on grass was the one guy against whom he still didn't feel the match was on his racquet even when he was playing well. And even on his 2nd serve there were times he'd be so confident a la you-know-who:
(love Mac's and Lendl's post-ace expressions)
But other times Goran could be wobbly as in the '98 Wimby final, unlike again you-know-who. It's really that combo of unflappability and reliability that made the Sampras serve arguably the best in history. Guys like Goran, Ivo and Arthurs might have surpassed him in practice or smaller matches, but come the money moments Sampras was gold to everyone else's silver.
(BTW I love Goran's form in that match. Unbreakable serves, McEnroesque touch volleys, gazelle-like movement, he had 'em that day.)
Heh, that was just another classic Alicia Silverstone impersonation from our dear Doctor Oliver. As you may recall Datacipher used to call Tanner's serve "biomechanical perfection" and the single most awe-inspiring shot he'd ever seen in person. To even think this arguably most effective of all service motions "jerky" is... well, let's ask Alicia: