The winning Delaware Play 4 numbers for January 17, 1999 were: night 0-1-5-9.
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 |
|---|---|---|---|---|
| Jan 17, 1999 | Night | 0-1-5-9 | 15 | 6 |
| Jan 16, 1999 | Night | 3-6-8-6 | 23 | 5 |
| Jan 16, 1999 | Day | 8-7-3-9 | 27 | 9 |
| Jan 15, 1999 | Night | 5-4-5-6 | 20 | 2 |
| Jan 15, 1999 | Day | 6-1-4-7 | 18 | 9 |
| Jan 14, 1999 | Night | 6-8-2-9 | 25 | 7 |
| Jan 14, 1999 | Day | 5-4-0-6 | 15 | 6 |
| Jan 13, 1999 | Night | 5-5-8-5 | 23 | 5 |
| Jan 13, 1999 | Day | 8-8-2-0 | 18 | 9 |
| Jan 12, 1999 | Night | 4-4-4-6 | 18 | 9 |
| Jan 12, 1999 | Day | 1-6-7-2 | 16 | 7 |
| Jan 11, 1999 | Night | 0-4-4-2 | 10 | 1 |
| Jan 11, 1999 | Day | 5-8-0-7 | 20 | 2 |