The winning Delaware Play 4 numbers for February 28, 1999 were: night 9-8-1-8.
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 |
|---|---|---|---|---|
| Feb 28, 1999 | Night | 9-8-1-8 | 26 | 8 |
| Feb 27, 1999 | Night | 3-2-3-9 | 17 | 8 |
| Feb 27, 1999 | Day | 4-5-7-5 | 21 | 3 |
| Feb 26, 1999 | Night | 1-5-3-6 | 15 | 6 |
| Feb 26, 1999 | Day | 3-0-7-7 | 17 | 8 |
| Feb 25, 1999 | Night | 0-5-2-7 | 14 | 5 |
| Feb 25, 1999 | Day | 7-6-0-8 | 21 | 3 |
| Feb 24, 1999 | Night | 1-7-9-2 | 19 | 1 |
| Feb 24, 1999 | Day | 2-3-4-3 | 12 | 3 |
| Feb 23, 1999 | Night | 5-0-3-9 | 17 | 8 |
| Feb 23, 1999 | Day | 0-8-6-4 | 18 | 9 |
| Feb 22, 1999 | Night | 2-3-1-9 | 15 | 6 |
| Feb 22, 1999 | Day | 9-8-1-9 | 27 | 9 |