According to a report at Sanspo, the Washington Nationals had 2 scouts at last night's Hanshin Tigers - Chunichi Dragons game. From the sounds of the report, it seems they may have been checking out players like Wei-Ying Chen (CH) and Jason Standridge (HAN). For this particular report, Sanspo focused on the Nationals' possible interest in Standridge.
Comments from the scouts that appear in the report:
We're here to see everyone. No one particular player.
Of course we have some interest in Standridge.
All of Jason's pitches are good. He's got good balance and good control.
We were watching him pitch in the Dominican Winter League. His control over the fastball and the way he mixes pitches has improved.
UPDATE @ 12:50pm - A separate report from Nikkan Sports notes that a number of other clubs were at the game, including the New York Yankees and Texas Rangers (likely taking a look at Chen).