The winning Delaware Play 4 numbers for May 15, 2005 were: night 2-7-0-1.
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 |
|---|---|---|---|---|
| May 15, 2005 | Night | 2-7-0-1 | 10 | 1 |
| May 14, 2005 | Night | 6-7-1-3 | 17 | 8 |
| May 14, 2005 | Day | 9-8-1-2 | 20 | 2 |
| May 13, 2005 | Night | 3-7-7-8 | 25 | 7 |
| May 13, 2005 | Day | 0-1-3-8 | 12 | 3 |
| May 12, 2005 | Night | 6-2-2-4 | 14 | 5 |
| May 12, 2005 | Day | 8-6-5-9 | 28 | 1 |
| May 11, 2005 | Night | 9-4-0-8 | 21 | 3 |
| May 11, 2005 | Day | 2-9-0-0 | 11 | 2 |
| May 10, 2005 | Night | 7-1-7-6 | 21 | 3 |
| May 10, 2005 | Day | 3-6-0-7 | 16 | 7 |
| May 9, 2005 | Night | 1-3-0-4 | 8 | 8 |
| May 9, 2005 | Day | 4-4-5-0 | 13 | 4 |