I'm willing to put the house I don't own on Wada going for the exact same lineup this Saturday night against Hiroshima. The purple boys play just three at the back so we need players in the center who can shut down a 5-man (sometimes 6-man) midfield. Okubo, Matsuoka and Mihara would be my first choices to fulfill such a role. Park is also fast enough to cover the right side in defense (when he's not scoring goals!). With Botti out, I would say this is the perfect opportunity for Tanaka to make his first appearance for a while later in the game as well.