sentences:  He records a moderate number of strikeouts each season but is inherently a groundball pitcher, adept at jamming opposing hitters with his wide assortment of offspeed pitches and excellent command (2.00 career walks per nine innings rate in NPB).Iwakuma has also remarked that his command has improved since missing much of the 2006 and 2007 seasons due to injury as he was forced to overhaul his mechanics and rethink his approach against opposing batters.Iwakuma's wife, Madoka, and two children, Towa and Uta, moved with him from Japan to Seattle at the start of his Mariner career.