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 | Mar 17 | Mar 24 | Mar 31 | April 7 | April 14 | April 21 | April 28 | May 5 | May 12 | May 19 | May 26 | Final |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| USA Today/ESPN Coaches' Poll | NR | NR | 24 | 17 | 10 | 6 | 9 | 8 | 7 | 7 | 6 | 7 | 10 | 23 |
| Baseball America | NR | NR | 22 | 19 | 11 | 6 | 9 | 8 | 6 | 5 | 5 | 12 | 13 | 20 |
| Collegiate Baseball (Top 30) | 38 | NR | 22 | 15 | 9 | 6 | 10 | 10 | 10 | 7 | 6 | 13 | 15 | 22 |
| NCBWA (Top 35) | NR | NR | NR | 30 | 22 | 14 | 13 | 13 | 9 | 7 | 6 | 10 | 13 | 20 |
| Rivals.com | NR | NR | 21 | 16 | 12 | 6 | 11 | 8 | 9 | 8 | 6 | 8 | 11 | 21 |
| NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | NR = Not Ranked | 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:
What is the April 28th rank when the Final is 20, and Mar 17 is 22?
Answer:
6.0