The winning Delaware Play 3 numbers for May 31, 1999 were: night 8-8-6.
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 |
|---|---|---|---|---|
| May 31, 1999 | Night | 8-8-6 | 22 | 4 |
| May 30, 1999 | Night | 1-2-9 | 12 | 3 |
| May 29, 1999 | Night | 4-7-0 | 11 | 2 |
| May 29, 1999 | Day | 7-4-3 | 14 | 5 |
| May 28, 1999 | Night | 0-7-2 | 9 | 9 |
| May 28, 1999 | Day | 3-7-5 | 15 | 6 |
| May 27, 1999 | Night | 4-0-9 | 13 | 4 |
| May 27, 1999 | Day | 6-2-4 | 12 | 3 |
| May 26, 1999 | Night | 8-6-2 | 16 | 7 |
| May 26, 1999 | Day | 5-4-6 | 15 | 6 |
| May 25, 1999 | Night | 6-2-0 | 8 | 8 |
| May 25, 1999 | Day | 8-0-2 | 10 | 1 |