After Tiger made bogey on 17 and 18 during Saturday's round, he stormed over to the range to work out his driver. I thought it would be fun to watch, so I followed. He had an interesting drill he was doing under the watchful eye of Hank Haney where he would tee up two balls about 4 or 5 inches apart, then using very light lag pressure he would literally drive the first one into the ground. The ball would hit the ground about 10-20 yards out then roll out about 150 yards. He then immediately stepped up and hit the next ball normally.
What do you think he was trying to feel or work on with this drill?