 In the same year, he invented his first set of irons which he named "69", which he considered to be a good round of golf.Solheim continued to experiment with the effects of good heel-toe weighting in his irons and also milled a cavity into the steel back of the irons for added forgiveness.The first PGA Tour victory while using a PING club came in 1962 at the Cajun Classic Open Invitational by John Barnum.