Most balls come in one standard size
and the rules of golf do state a minimum and a maximum
diameter of ball. The size of the ball will determine
the rate of spin more than anything else. The larger
the diameter of any circle, the slower the outside of
that circle will spin. Therefor, a ball such as the
Topflight Magna (which is the most recognized oversized
golf ball) will have a slower spin rate than say a regular
sized ball, when hit with the same swing. This is good
Good because, for most golfers a large problem is the
slice or the hook which is a result of producing side
spin on the ball during the shot. The larger ball will
have less spin and therefor curve left or right less
than a smaller ball.
Bad due to the increased wind resistance. The larger
ball will create more drag upon the surrounding air
and therefor not fly as far.
Bad because a well struck shot will not have the same
backspin as a smaller ball would and therefor be less
likely to stop quickly on the green.
Good along the same lines because the ball hit down
the middle of the fairway will have less backspin and
continue to roll further than a ball which has more