The winning Delaware Play 4 numbers for May 16, 2010 were: night 4-3-1-4.
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 |
|---|---|---|---|---|
| May 16, 2010 | Night | 4-3-1-4 | 12 | 3 |
| May 15, 2010 | Night | 3-8-9-8 | 28 | 1 |
| May 15, 2010 | Day | 7-3-4-4 | 18 | 9 |
| May 14, 2010 | Night | 9-7-6-4 | 26 | 8 |
| May 14, 2010 | Day | 6-5-5-5 | 21 | 3 |
| May 13, 2010 | Night | 4-7-0-2 | 13 | 4 |
| May 13, 2010 | Day | 3-4-3-6 | 16 | 7 |
| May 12, 2010 | Night | 9-0-2-1 | 12 | 3 |
| May 12, 2010 | Day | 0-9-4-4 | 17 | 8 |
| May 11, 2010 | Night | 7-0-5-8 | 20 | 2 |
| May 11, 2010 | Day | 9-4-9-5 | 27 | 9 |
| May 10, 2010 | Night | 6-5-5-0 | 16 | 7 |
| May 10, 2010 | Day | 0-6-3-8 | 17 | 8 |