The winning Connecticut Play4 numbers for August 17, 2021 were: day 4-9-1-2; night 4-8-6-0.
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 |
|---|---|---|---|---|
| Aug 17, 2021 | Night | 4-8-6-0 | 18 | 9 |
| Aug 17, 2021 | Day | 4-9-1-2 | 16 | 7 |
| Aug 16, 2021 | Night | 7-0-5-5 | 17 | 8 |
| Aug 16, 2021 | Day | 5-5-5-1 | 16 | 7 |
| Aug 15, 2021 | Night | 4-0-3-8 | 15 | 6 |
| Aug 15, 2021 | Day | 7-5-7-7 | 26 | 8 |
| Aug 14, 2021 | Night | 9-3-4-9 | 25 | 7 |
| Aug 14, 2021 | Day | 7-6-0-9 | 22 | 4 |
| Aug 13, 2021 | Night | 8-7-8-7 | 30 | 3 |
| Aug 13, 2021 | Day | 1-5-9-7 | 22 | 4 |
| Aug 12, 2021 | Night | 8-4-4-1 | 17 | 8 |
| Aug 12, 2021 | Day | 5-4-9-8 | 26 | 8 |
| Aug 11, 2021 | Night | 9-2-3-1 | 15 | 6 |
| Aug 11, 2021 | Day | 2-9-3-7 | 21 | 3 |