Seibu Lions infielder Shuta Tonosaki conducted batting practice and other activities at the club's facilities in Tokorozawa, Saitama on the 31st. Regarding the international free agency rights he acquired during this season, he revealed that he had spoken with Director and General Manager Hiroike, but limited his comments on whether he would exercise them by saying, "It is undecided."

In this season, his 12th year as a professional, he was limited to 35 game appearances and recorded a batting average of .167, with 16 hits, 2 Home Runs, and 9 RBI.