Toshiki Sakurai (right elbow discomfort) started making slows and easy throws on April 16. He upgraded to playing catch on April 19. It was his first real game of catch since he started feeling discomfort in his right elbow on March 30. He threw the ball forty times at a distance of about twenty meters. He also threw the ball into a net thirty times.
Source: Sponichi 4/20/2016