The winning Delaware Play 4 numbers for July 16, 1999 were: day 6-6-0-1; night 1-0-3-8.
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 |
|---|---|---|---|---|
| Jul 16, 1999 | Night | 1-0-3-8 | 12 | 3 |
| Jul 16, 1999 | Day | 6-6-0-1 | 13 | 4 |
| Jul 15, 1999 | Night | 7-7-1-0 | 15 | 6 |
| Jul 15, 1999 | Day | 8-0-5-7 | 20 | 2 |
| Jul 14, 1999 | Night | 8-9-1-0 | 18 | 9 |
| Jul 14, 1999 | Day | 9-6-3-4 | 22 | 4 |
| Jul 13, 1999 | Night | 9-7-1-6 | 23 | 5 |
| Jul 13, 1999 | Day | 3-7-7-0 | 17 | 8 |
| Jul 12, 1999 | Night | 2-9-3-0 | 14 | 5 |
| Jul 12, 1999 | Day | 7-7-7-3 | 24 | 6 |
| Jul 11, 1999 | Night | 8-9-1-6 | 24 | 6 |
| Jul 10, 1999 | Night | 2-0-1-9 | 12 | 3 |
| Jul 10, 1999 | Day | 5-5-2-8 | 20 | 2 |