He and Eiji often use the "Australian Formation", where they stand directly on the center line to confuse the opponents as to which way each player will move when the ball is placed into the opposing court. The "I-Formation" is a variation where Eiji stays below the net and Oishi serves the ball down the center. They also develop "Oishi Territory", which has Oishi focus on the net while Eiji stays in the back. It takes advantage of Oishi's ability to read the opponent while passing information to Eiji in the back. They later develop the "Synchronization" ability, which lets them play and move as if they are one person.