The winning Oregon Pick 4 numbers for May 21, 2015 were: midday 6-2-5-8; day 6-8-6-9; evening 6-6-2-8; night 5-0-8-8.
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).
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 |
|---|---|---|---|---|
| May 21, 2015 | Night | 5-0-8-8 | 21 | 3 |
| May 21, 2015 | Evening | 6-6-2-8 | 22 | 4 |
| May 21, 2015 | Day | 6-8-6-9 | 29 | 2 |
| May 21, 2015 | Midday | 6-2-5-8 | 21 | 3 |
| May 20, 2015 | Night | 0-7-0-8 | 15 | 6 |
| May 20, 2015 | Evening | 4-8-1-2 | 15 | 6 |
| May 20, 2015 | Day | 8-1-3-1 | 13 | 4 |
| May 20, 2015 | Midday | 1-2-3-5 | 11 | 2 |
| May 19, 2015 | Night | 1-7-8-8 | 24 | 6 |
| May 19, 2015 | Evening | 5-7-8-7 | 27 | 9 |
| May 19, 2015 | Day | 5-0-2-0 | 7 | 7 |
| May 19, 2015 | Midday | 8-4-8-7 | 27 | 9 |
| May 18, 2015 | Night | 7-3-6-3 | 19 | 1 |
| May 18, 2015 | Evening | 2-4-0-6 | 12 | 3 |
| May 18, 2015 | Day | 5-1-5-9 | 20 | 2 |
| May 18, 2015 | Midday | 8-2-0-9 | 19 | 1 |
| May 17, 2015 | Night | 4-2-2-5 | 13 | 4 |
| May 17, 2015 | Evening | 9-1-7-6 | 23 | 5 |
| May 17, 2015 | Day | 5-4-2-2 | 13 | 4 |
| May 17, 2015 | Midday | 7-3-5-7 | 22 | 4 |
| May 16, 2015 | Night | 0-0-6-9 | 15 | 6 |
| May 16, 2015 | Evening | 6-0-8-6 | 20 | 2 |
| May 16, 2015 | Day | 6-1-5-5 | 17 | 8 |
| May 16, 2015 | Midday | 1-4-2-6 | 13 | 4 |
| May 15, 2015 | Night | 5-4-7-9 | 25 | 7 |
| May 15, 2015 | Evening | 9-5-6-9 | 29 | 2 |
| May 15, 2015 | Day | 0-5-2-5 | 12 | 3 |
| May 15, 2015 | Midday | 7-4-4-9 | 24 | 6 |