The winning New York Win 4 numbers for September 21, 1990 were: evening 4-1-4-9.
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, 1990 | Evening | 4-1-4-9 | 18 | 9 |
| Sep 20, 1990 | Evening | 1-7-8-1 | 17 | 8 |
| Sep 19, 1990 | Evening | 5-8-8-7 | 28 | 1 |
| Sep 18, 1990 | Evening | 4-9-1-3 | 17 | 8 |
| Sep 17, 1990 | Evening | 7-3-4-1 | 15 | 6 |
| Sep 16, 1990 | Evening | 8-1-7-5 | 21 | 3 |
| Sep 15, 1990 | Evening | 2-6-8-9 | 25 | 7 |