The winning Delaware Play 4 numbers for September 16, 1989 were: night 9-1-8-0.
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 16, 1989 | Night | 9-1-8-0 | 18 | 9 |
| Sep 15, 1989 | Night | 4-5-0-5 | 14 | 5 |
| Sep 14, 1989 | Night | 5-8-5-7 | 25 | 7 |
| Sep 13, 1989 | Night | 8-9-9-6 | 32 | 5 |
| Sep 12, 1989 | Night | 5-8-2-6 | 21 | 3 |
| Sep 11, 1989 | Night | 3-1-2-2 | 8 | 8 |