The winning Wisconsin Pick 4 numbers for September 21, 2021 were: midday 6-3-1-5; evening 6-2-1-3.
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 21, 2021 | Evening | 6-2-1-3 | 12 | 3 |
| Sep 21, 2021 | Midday | 6-3-1-5 | 15 | 6 |
| Sep 20, 2021 | Evening | 1-3-5-3 | 12 | 3 |
| Sep 20, 2021 | Midday | 4-3-6-8 | 21 | 3 |
| Sep 19, 2021 | Evening | 5-3-1-2 | 11 | 2 |
| Sep 19, 2021 | Midday | 6-7-5-6 | 24 | 6 |
| Sep 18, 2021 | Evening | 1-8-4-1 | 14 | 5 |
| Sep 18, 2021 | Midday | 4-4-0-4 | 12 | 3 |
| Sep 17, 2021 | Evening | 6-2-1-0 | 9 | 9 |
| Sep 17, 2021 | Midday | 8-5-9-6 | 28 | 1 |
| Sep 16, 2021 | Evening | 4-5-7-1 | 17 | 8 |
| Sep 16, 2021 | Midday | 3-2-0-1 | 6 | 6 |
| Sep 15, 2021 | Evening | 2-1-1-6 | 10 | 1 |
| Sep 15, 2021 | Midday | 2-9-1-5 | 17 | 8 |