The winning Delaware Play 4 numbers for July 10, 1991 were: night 4-8-7-9.
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 |
|---|---|---|---|---|
| Jul 10, 1991 | Night | 4-8-7-9 | 28 | 1 |
| Jul 9, 1991 | Night | 5-7-1-3 | 16 | 7 |
| Jul 8, 1991 | Night | 9-2-6-4 | 21 | 3 |
| Jul 7, 1991 | Night | 0-3-8-5 | 16 | 7 |
| Jul 6, 1991 | Night | 6-5-5-1 | 17 | 8 |
| Jul 5, 1991 | Night | 5-1-9-3 | 18 | 9 |
| Jul 4, 1991 | Night | 3-0-0-0 | 3 | 3 |