The winning Delaware Play 4 numbers for March 13, 1991 were: night 3-1-2-1.
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 |
|---|---|---|---|---|
| Mar 13, 1991 | Night | 3-1-2-1 | 7 | 7 |
| Mar 12, 1991 | Night | 5-3-1-8 | 17 | 8 |
| Mar 11, 1991 | Night | 2-9-8-3 | 22 | 4 |
| Mar 10, 1991 | Night | 7-6-2-3 | 18 | 9 |
| Mar 9, 1991 | Night | 7-5-3-9 | 24 | 6 |
| Mar 8, 1991 | Night | 3-5-8-8 | 24 | 6 |
| Mar 7, 1991 | Night | 8-2-3-0 | 13 | 4 |