The winning Delaware Play 4 numbers for March 21, 2021 were: night 7-2-4-2.
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 |
|---|---|---|---|---|
| Mar 21, 2021 | Night | 7-2-4-2 | 15 | 6 |
| Mar 20, 2021 | Night | 9-1-3-0 | 13 | 4 |
| Mar 20, 2021 | Day | 0-2-0-7 | 9 | 9 |
| Mar 19, 2021 | Night | 4-1-1-0 | 6 | 6 |
| Mar 19, 2021 | Day | 3-6-4-2 | 15 | 6 |
| Mar 18, 2021 | Night | 6-7-8-5 | 26 | 8 |
| Mar 18, 2021 | Day | 5-9-8-1 | 23 | 5 |
| Mar 17, 2021 | Night | 1-1-1-5 | 8 | 8 |
| Mar 17, 2021 | Day | 2-7-6-1 | 16 | 7 |
| Mar 16, 2021 | Night | 4-9-5-5 | 23 | 5 |
| Mar 16, 2021 | Day | 9-9-0-6 | 24 | 6 |
| Mar 15, 2021 | Night | 0-2-2-5 | 9 | 9 |
| Mar 15, 2021 | Day | 9-5-5-8 | 27 | 9 |