"It's the equipment"
/That was Andy North on today's U.S. Senior Open telecast to explain why Crooked Stick's maximum yardage for the Senior Open is longer than it was for the 1991 PGA. The context of a USGA event telecast made the graphic (below) and comments quite the eye opener and I'm sure it was greatly appreciated in USGA Hospitality.
As the graphic was posted North pointed out that the Champions Tour driving distance average in 1991 was 261 yards; 274 yards in 2009. But no love for all the time the guys have spent in the fitness trailer getting massages lifting weights.