Craig Roback
| Date | Course | Tee | Slope | Rating | Score | Equation | Differential |
|---|---|---|---|---|---|---|---|
| Oct. 15, 2025 | Battlefield Golf Club | Gold | 116 | 65.6 | 77 | (77 - 65.6) x 113 ÷ 116 = | 11.1 |
| Oct. 1, 2025 | Virginia Beach National Golf Club | Gold | 115 | 65.9 | 89 | (89 - 65.9) x 113 ÷ 115 = | 22.7 |
| Sept. 10, 2025 | Red Wing Lake Golf Course | Gold | 110 | 66.4 | 82 | (82 - 66.4) x 113 ÷ 110 = | 16.0 |
| Oct. 30, 2024 | Bide-A-Wee Golf Course | Yellow | 115 | 65.3 | 83 | (83 - 65.3) x 113 ÷ 115 = | 17.4 |
| Sept. 4, 2024 | Riverfront Golf Course | Green | 125 | 68.3 | 89 | (89 - 68.3) x 113 ÷ 125 = | 18.7 |
| Aug. 28, 2024 | Heron Ridge Golf Course | Gold | 123 | 66.9 | 83 | (83 - 66.9) x 113 ÷ 123 = | 14.8 |
| Aug. 14, 2024 | Aeropines Golf Course | Orange | 117 | 66.5 | 87 | (87 - 66.5) x 113 ÷ 117 = | 19.8 |
| July 31, 2024 | Sewells Point Golf Course | Sewells Point Golf Course | 110 | 65.1 | 79 | (79 - 65.1) x 113 ÷ 110 = | 14.3 |
| July 24, 2024 | Kempsville Greens Golf Course | Yellow | 113 | 64.0 | 82 | (82 - 64.0) x 113 ÷ 113 = | 18.0 |
| July 17, 2024 | Kiln Creek Golf Course | Green | 116 | 65.3 | 84 | (84 - 65.3) x 113 ÷ 116 = | 18.2 |
| June 12, 2024 | Eagle Haven Golf Course | Eagle Haven Golf Course | 112 | 65.0 | 89 | (89 - 65.0) x 113 ÷ 112 = | 24.2 |
| May 29, 2024 | Stumpy Lake Golf Course | Green | 110 | 64.6 | 87 | (87 - 64.6) x 113 ÷ 110 = | 23.0 |
| April 24, 2024 | Riverfront Golf Course | Green | 125 | 68.3 | 95 | (95 - 68.3) x 113 ÷ 125 = | 24.1 |
| April 17, 2024 | Red Wing Lake Golf Course | Gold | 110 | 66.4 | 82 | (82 - 66.4) x 113 ÷ 110 = | 16.0 |
| Oct. 18, 2023 | Aeropines Golf Course | Hornet Course | 115 | 66.4 | 84 | (84 - 66.4) x 113 ÷ 115 = | 17.3 |
| Oct. 11, 2023 | Kempsville Greens Golf Course | Kempsville Greens Golf Course | 112 | 63.8 | 80 | (80 - 63.8) x 113 ÷ 112 = | 16.3 |
| Sept. 6, 2023 | Bide-A-Wee Golf Course | Yellow | 115 | 65.3 | 81 | (81 - 65.3) x 113 ÷ 115 = | 15.4 |
| Aug. 2, 2023 | Heron Ridge Golf Course | Gold | 123 | 66.9 | 84 | (84 - 66.9) x 113 ÷ 123 = | 15.7 |
| July 12, 2023 | Riverfront Golf Course | Green | 125 | 68.3 | 85 | (85 - 68.3) x 113 ÷ 125 = | 15.1 |
| July 5, 2023 | Kiln Creek Golf Course | Green | 116 | 65.3 | 88 | (88 - 65.3) x 113 ÷ 116 = | 22.1 |
Then we use the 8 lowest differentials according to this USGA table:
We add the lowest 8 differentials together, which are
11.1,
14.3,
14.8,
15.1,
15.4,
15.7,
16.0,
16.0,
and get 118.4.
Then we take that total and get the average differential score 118.4 ÷ 8 = 14.8
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 118.4 ÷ 8 = 14.8
Lastly we lop off all numbers past the first decimal point and we get