The winning Michigan Daily 4 numbers for September 21, 1987 were: evening 3-9-7-4.
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, 1987 | Evening | 3-9-7-4 | 23 | 5 |
| Sep 19, 1987 | Evening | 9-6-6-6 | 27 | 9 |
| Sep 18, 1987 | Evening | 5-4-3-0 | 12 | 3 |
| Sep 17, 1987 | Evening | 5-6-3-4 | 18 | 9 |
| Sep 16, 1987 | Evening | 6-3-6-6 | 21 | 3 |
| Sep 15, 1987 | Evening | 0-0-4-8 | 12 | 3 |