The winning Delaware Play 4 numbers for April 1, 1991 were: night 6-2-1-6.
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 |
|---|---|---|---|---|
| Apr 1, 1991 | Night | 6-2-1-6 | 15 | 6 |
| Mar 31, 1991 | Night | 4-2-4-4 | 14 | 5 |
| Mar 30, 1991 | Night | 7-8-2-1 | 18 | 9 |
| Mar 29, 1991 | Night | 5-6-3-1 | 15 | 6 |
| Mar 28, 1991 | Night | 4-9-9-9 | 31 | 4 |
| Mar 27, 1991 | Night | 4-4-1-8 | 17 | 8 |
| Mar 26, 1991 | Night | 7-0-1-9 | 17 | 8 |