The winning Delaware Play 4 numbers for September 28, 1991 were: night 9-1-3-2.
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 28, 1991 | Night | 9-1-3-2 | 15 | 6 |
| Sep 27, 1991 | Night | 1-5-5-7 | 18 | 9 |
| Sep 26, 1991 | Night | 2-6-5-4 | 17 | 8 |
| Sep 25, 1991 | Night | 1-9-9-9 | 28 | 1 |
| Sep 24, 1991 | Night | 2-4-8-5 | 19 | 1 |
| Sep 23, 1991 | Night | 3-7-3-5 | 18 | 9 |
| Sep 22, 1991 | Night | 9-5-2-3 | 19 | 1 |