To find out how much farther, we went down the list of driving-distance leaders on the PGA Tour Champions this season and then looked up what some of those bigger-name players averaged off the tee during the PGA Tour season in which they turned 30. (We picked 30 because it's a nice, round number, but it also happens to be the average age of Johnson and Rory McIlroy, the PGA Tour's two longest hitters this year.) The results were eye-popping, even for the 60-year-olds on the 50-and-older circuit.