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:
| Res. | Record | Opponent | Method | Event | Round | Time | Location |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Win | 5-0 | Yusuke Kawaguchi | TKO (punches and elbows) | Rumble of the Kings 6 | 1.0 | 3:18 | Stockholm , Sweden |
| Win | 4-0 | Tadas Sapoka | Submission (punches) | International Fighting Arena 2 | 1.0 | 0:38 | Uppsala , Sweden |
| Win | 3-0 | Jaime Fletcher | TKO (punches) | K-1 Rumble of the Kings 2009 in Stockholm | 1.0 | 4:25 | Stockholm , Sweden |
| Win | 2-0 | Tadas Levickas | Submission (triangle choke) | K-1 Rumble of the Kings Qualification 2009 Malmö | 1.0 | 0:50 | Malmö , Sweden |
| Win | 1-0 | Arturas Liutika | TKO (punches) | World Freefight Challenge 8 "D-Day" | 1.0 | 0:35 | Ljubljana , Slovenia |
Question:
Who did he fight in Rumble of the Kings 6?
Answer:
Yusuke Kawaguchi