Don Porfano
| Date | Course | Tee | Slope | Rating | Score | Equation | Differential |
|---|---|---|---|---|---|---|---|
| Nov. 15, 2017 | Sewells Point Golf Club | Sewells Point Golf Club | 110 | 65.1 | 83 | (83 - 65.1) x 113 ÷ 110 = | 18.4 |
| Nov. 1, 2017 | Virginia Beach National Golf Club | Virginia Beach National Golf Club | 121 | 66.9 | 95 | (95 - 66.9) x 113 ÷ 121 = | 26.2 |
| Oct. 18, 2017 | Cypress Point Country Club | Yellow | 111 | 66.2 | 83 | (83 - 66.2) x 113 ÷ 111 = | 17.1 |
| Oct. 4, 2017 | Honey Bee Golf Club | Honey Bee Golf Club | 116 | 65.6 | 81 | (81 - 65.6) x 113 ÷ 116 = | 15.0 |
| Sept. 27, 2017 | Riverfront Golf Course | Green | 125 | 68.3 | 81 | (81 - 68.3) x 113 ÷ 125 = | 11.5 |
| Sept. 20, 2017 | Red Wing Lake Golf Course | Red Wing Lake Golf Course | 111 | 66.3 | 84 | (84 - 66.3) x 113 ÷ 111 = | 18.0 |
| Sept. 13, 2017 | Cypress Creek Golfers Club | Cypress Creek Golf Course | 118 | 66.8 | 84 | (84 - 66.8) x 113 ÷ 118 = | 16.5 |
| Sept. 6, 2017 | Eagle Haven | Gold | 112 | 65.0 | 81 | (81 - 65.0) x 113 ÷ 112 = | 16.1 |
| Aug. 30, 2017 | Bide-A-Wee Golf Course | Yellow | 110 | 65.5 | 84 | (84 - 65.5) x 113 ÷ 110 = | 19.0 |
| Aug. 23, 2017 | Aeropines Golf Club | Hornet Course | 115 | 66.4 | 88 | (88 - 66.4) x 113 ÷ 115 = | 21.2 |
| Aug. 9, 2017 | Heron Ridge Golf Course | Gold | 121 | 67.1 | 88 | (88 - 67.1) x 113 ÷ 121 = | 19.5 |
| Aug. 2, 2017 | Cypress Creek Golfers Club | Cypress Creek Golf Course | 118 | 66.8 | 83 | (83 - 66.8) x 113 ÷ 118 = | 15.5 |
| July 26, 2017 | Honey Bee Golf Club | Honey Bee Golf Club | 116 | 65.6 | 75 | (75 - 65.6) x 113 ÷ 116 = | 9.2 |
| July 19, 2017 | Virginia Beach National Golf Club | Virginia Beach National Golf Club | 121 | 66.9 | 87 | (87 - 66.9) x 113 ÷ 121 = | 18.8 |
| July 5, 2017 | Ocean View Golf Course | Gold | 103 | 63.4 | 79 | (79 - 63.4) x 113 ÷ 103 = | 17.1 |
| June 28, 2017 | Sleepy Hole Golf Course | Sleepy Hole Golf Course | 122 | 66.5 | 94 | (94 - 66.5) x 113 ÷ 122 = | 25.5 |
| June 14, 2017 | Red Wing Lake Golf Course | Red Wing Lake Golf Course | 111 | 66.3 | 81 | (81 - 66.3) x 113 ÷ 111 = | 15.0 |
| May 31, 2017 | Stumpy Lake Golf Course | Gold | 118 | 67.3 | 82 | (82 - 67.3) x 113 ÷ 118 = | 14.1 |
| May 17, 2017 | Heron Ridge Golf Course | Gold | 121 | 67.1 | 96 | (96 - 67.1) x 113 ÷ 121 = | 27.0 |
| May 10, 2017 | Bide-A-Wee Golf Course | Yellow | 110 | 65.5 | 93 | (93 - 65.5) x 113 ÷ 110 = | 28.3 |
Then we use the 8 lowest differentials according to this USGA table:
We add the lowest 8 differentials together, which are
9.2,
11.5,
14.1,
15.0,
15.0,
15.5,
16.1,
16.5,
and get 112.9.
Then we take that total and get the average differential score 112.9 ÷ 8 = 14.1125
Lastly we lop off all numbers past the first decimal point and we get
Then we take that total and get the average differential score 112.9 ÷ 8 = 14.1125
Lastly we lop off all numbers past the first decimal point and we get