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:
| Rank | Player | Team | Year | BB/SO |
| --- | --- | --- | --- | --- |
| 1.0 | Joe Sewell | NYY | 1932.0 | 18.67 |
| 2.0 | Joe Sewell | NYY | 1933.0 | 17.75 |
| 3.0 | Joe Sewell | CLE | 1925.0 | 16.0 |
| 4.0 | Joe Sewell | CLE | 1929.0 | 12.0 |
| 5.0 | Charlie Hollocher | CHC | 1922.0 | 11.6 |
| 6.0 | Lou Boudreau | CLE | 1948.0 | 10.89 |
| 7.0 | Eddie Collins | CWS | 1925.0 | 10.88 |
| 8.0 | Joe Sewell | CLE | 1926.0 | 10.83 |
| 9.0 | Eddie Collins | CWS | 1923.0 | 10.5 |
| 10.0 | Mickey Cochrane | PHA | 1929.0 | 8.63 |
| 11.0 | Joe Sewell | CLE | 1923.0 | 8.17 |
| 12.0 | Tommy Holmes | BSN | 1945.0 | 7.78 |
| 13.0 | Joe Sewell | NYY | 1931.0 | 7.75 |
| 14.0 | Tris Speaker | CLE | 1920.0 | 7.46 |
| 15.0 | Joe Sewell | CLE | 1927.0 | 7.29 |
| 16.0 | Mickey Cochrane | PHA | 1927.0 | 7.14 |
| 17.0 | Tris Speaker | CLE | 1918.0 | 7.11 |
| 18.0 | Lou Boudreau | CLE | 1949.0 | 7.0 |
| 18.0 | Tris Speaker | CLE | 1922.0 | 7.0 |
Question:
What was the rank of tris speaker when BB/SO was 7?
Answer:
18.0