The winning Delaware Play 3 numbers for September 22, 1999 were: day 3-6-9; night 4-8-1.
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).
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 |
|---|---|---|---|---|
| Sep 22, 1999 | Night | 4-8-1 | 13 | 4 |
| Sep 22, 1999 | Day | 3-6-9 | 18 | 9 |
| Sep 21, 1999 | Night | 4-4-4 | 12 | 3 |
| Sep 21, 1999 | Day | 0-9-3 | 12 | 3 |
| Sep 20, 1999 | Night | 4-0-6 | 10 | 1 |
| Sep 20, 1999 | Day | 0-8-2 | 10 | 1 |
| Sep 19, 1999 | Night | 2-0-2 | 4 | 4 |
| Sep 18, 1999 | Night | 9-1-9 | 19 | 1 |
| Sep 18, 1999 | Day | 2-9-5 | 16 | 7 |
| Sep 17, 1999 | Night | 8-2-0 | 10 | 1 |
| Sep 17, 1999 | Day | 9-3-4 | 16 | 7 |
| Sep 16, 1999 | Night | 0-7-9 | 16 | 7 |
| Sep 16, 1999 | Day | 5-5-8 | 18 | 9 |