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:
| Round | Pick | Player | Position | School/Club Team |
| --- | --- | --- | --- | --- |
| 1.0 | 14.0 | Ruben Brown | Guard | Pittsburgh |
| 2.0 | 45.0 | Todd Collins | Quarterback | Michigan |
| 3.0 | 76.0 | Marlon Kerner | Defensive back | Ohio State |
| 3.0 | 96.0 | Damien Covington | Linebacker | North Carolina State |
| 4.0 | 109.0 | Ken Irvin | Defensive back | Memphis |
| 4.0 | 113.0 | Justin Armour | Wide receiver | Stanford |
| 4.0 | 131.0 | Tony Cline | Tight end | Stanford |
| 5.0 | 144.0 | John Holecek | Linebacker | Illinois |
| 6.0 | 185.0 | Shannon Clavelle | Defensive tackle | Colorado |
| 7.0 | 221.0 | Tom Nütten | Center | Western Michigan |
| 7.0 | 244.0 | Darick Holmes | Running back | Portland State |
Question:
What round was Ken Irvin drafted?
Answer:
4.0