...The Eagles apparently want to space out starts by Hisashi Iwakuma and Masahiro Tanaka a little more. That is, they'd like Iwakuma and Tanaka to start the first game of each series, instead of go back-to-back. The idea being, opponents generally have their best pitchers start the first game of a series. If the Eagles can counter that with their best starters, then they'll have a better chance to win.
According to Nikkan Sports, Iwakuma will get tomorrow's start against the Lotte while Tanaka will get the start on the 22nd against the Seibu.