Swing speed 100 mph x 1.5 smash factor = 150 mph ball speed. With your irons the smash factor is lower, ... The average ball speed for a driver on the LPGA Tour is 139 mph.

For example, a player swinging a driver at 100 mph can produce up to 150 mph of ball speed, ... Now, maybe you’re asking yourself, “Wait a minute — I swing faster than 100 mph, ...