Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Poll | Pre- season | Mar. 3 | May 5 | May 12 | May 19 | May 26 | Final Poll |
| --- | --- | --- | --- | --- | --- | --- | --- |
| USA Today/ESPN Coaches' Poll (Top 25) | NR | NR | 22 | 21 | 13 | 7 | 6 |
| Baseball America (Top 25) | NR | NR | 22 | 16 | 10 | 5 | 6 |
| Collegiate Baseball (Top 30) | 30 | NR | 23 | 16 | 8 | 2 | 6 |
| NCBWA (Top 30) ^ | 34 | NR | 27 | 24 | 16 | 11 | 6 |
| Rivals.com (Top 25) | NR | NR | 21 | 16 | 15 | 6 | 6 |
| NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked |
Question:
Which pre-season has May 5 of 21?
Answer:
NR