Kentaro Yamamoto is tied in the series against
Yuuya Watanabe, 2-2-1.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Kitakyushu 2007 | 6 | 51 | Yamamoto, Kentaro (1611) | Lost 0-2 | Watanabe, Yuuya (1772) |
| Grand Prix Kobe 2009 | S | | Yamamoto, Kentaro (1826) | Lost 1-2 | Watanabe, Yuuya (1975) |
| 2014 World Championship | 13 | 1 | Yamamoto, Kentaro (2113) | ID | Watanabe, Yuuya (2120) |
| Pro Tour Battle for Zendikar | 6 | 89 | Yamamoto, Kentaro (2031) | Won 2-1 | Watanabe, Yuuya (2035) |
| Grand Prix Sydney 2016 | 14 | 120 | Yamamoto, Kentaro (2073) | Won 2-0 | Watanabe, Yuuya (2235) |