So when the 5-year-old from Elmwood Park teed it up Sunday for the first time on a real course, what else did he expect?
''He took a couple of practice swings, then hit it dead-square,'' said Brian Dragus, the father of the young golfer. ''It hit the green and rolled. Then I saw it disappear. I jumped up and yelled, 'Hole in one!' I'm not sure [Harrison] even knew what had happened. He had no reference point.''
Call it one for the ages.
The preschooler had just drilled his debut drive, an 83-yard laser, into the bottom of the cup on Hole??No. 1 at the Golf Center in Des Plaines, a par-3 course.
''I have been playing for 30 years and never had one,'' Brian Dragus said. ''He just thought it was neat. I get a 3 on the first hole, and I'm down two.''
Harrison had another close call on the third hole when he hit the green. He finished the day with a 49 -- still good enough to defeat his father, who had spotted him 20 strokes.
''When we got to the end, he wasn't having the same success,'' the older Dragus said. ''But he kept telling me how much fun he was having.''
After celebrating with ice cream sundaes, the two drove home, and Brian Dragus wasted no time checking online to find that Tiger Woods hit his first ace at age 6.