Mitsuru Manaka told reporters on August 18 that he does not think Tetsuto Yamada (left side, rib) will be ready to return to the active roster on August 20. He also said he plans to call Yamada up as soon as he is ready to play (no rehab games).
Yamada worked out at the Ni-gun facilities in Toda, Saitama on August 18. He still feels pain when taking grounders and batting practice, but not when running, full speed or otherwise.
Source: Daily Sports 8/19/2016