The winning Delaware Play 4 numbers for September 8, 1991 were: night 9-1-5-0.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| Sep 8, 1991 | Night | 9-1-5-0 | 15 | 6 |
| Sep 7, 1991 | Night | 5-3-0-5 | 13 | 4 |
| Sep 6, 1991 | Night | 3-0-8-6 | 17 | 8 |
| Sep 5, 1991 | Night | 5-9-5-8 | 27 | 9 |
| Sep 4, 1991 | Night | 9-5-9-8 | 31 | 4 |
| Sep 3, 1991 | Night | 4-7-8-6 | 25 | 7 |
| Sep 2, 1991 | Night | 6-3-8-3 | 20 | 2 |