Back in my days as a part time Uber driver while paralegalling at global law firms, I met a gentlemen who's son works as a performance sports scientist and works with some pretty big players in the golfing world. He worked with Rory in assisting him with improving his torque to get larger driving distances and not cripple his back ala Tiger.
When Rory first came to see him, he was pumping out something like 95 (what ever the measurement for it was) and they managed to get him upwards of around 110-115. He said, that was a dramatic improvement and they were extremely happy, but it was nowhere near Tiger in his prime. Apparently peak Tiger was somewhere up around 135-140 which they said just boiled down to freakish genetics.