The winning Delaware Play 3 numbers for September 12, 2021 were: night 4-3-7.
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 12, 2021 | Night | 4-3-7 | 14 | 5 |
| Sep 11, 2021 | Night | 5-7-1 | 13 | 4 |
| Sep 11, 2021 | Day | 0-3-3 | 6 | 6 |
| Sep 10, 2021 | Night | 9-7-0 | 16 | 7 |
| Sep 10, 2021 | Day | 2-6-9 | 17 | 8 |
| Sep 9, 2021 | Night | 4-4-3 | 11 | 2 |
| Sep 9, 2021 | Day | 0-9-1 | 10 | 1 |
| Sep 8, 2021 | Night | 2-9-9 | 20 | 2 |
| Sep 8, 2021 | Day | 5-0-4 | 9 | 9 |
| Sep 7, 2021 | Night | 9-4-5 | 18 | 9 |
| Sep 7, 2021 | Day | 0-3-8 | 11 | 2 |
| Sep 6, 2021 | Night | 6-7-7 | 20 | 2 |
| Sep 6, 2021 | Day | 4-4-0 | 8 | 8 |