This applies to weekend golfers and PGA and LPGA Tour professionals alike. So regardless of skill level the goal of every golfer should be to build an escape strategy that not only gets you out of trouble but gets you into a better position than you would have been in had your last swing not been a bad one. This keeps the damage caused be a poor swing to less than a stroke.
This change in grip position effectively shortens the clubshaft and takes a slight amount of power out of the swing making it a little easier to keep greenside shots under control.
Add it all up and players are left with a miniscule effective landing area to stop shots near the flagstick. In 2004 No. 13 — the shortest par 4 on the course — surrendered only 54 birdies in 442 attempts.