こっちのもの

expression, noun

mine (ours) for the taking; something under one's full control

An idiomatic expression used when one is confident of obtaining or controlling something, often in competitive or advantageous situations.

• この試し合あいはもうこっちの物ものだ。

  This game is as good as ours now.

• 彼かれが味み方かたにつけば、計けい画かくはこっちの物ものだ。

  If we get him on our side, the plan is under our control.