The 1982 Bavarian Tennis Championships was a men's Grand Prix tennis circuit tournament held in Munich, West Germany which was played on outdoor clay courts. It was the 66th edition of the tournament and was held form 17 May through 23 May 1982. Gene Mayer won the singles title.
The Bavarian championships was two editions over the middle 60th edition of the game
The Bavarian championships were the 66th edition which is one edition over the middle 60th, not two. Two would be 65 + 2 = 67 instead of 65+1 = 66. The model probably did the math wrong