 By virtue of winning the Shakaijin Cup, they earned a berth in the Regional League promotion series, and won the series at home to earn promotion to the Japan Football League for 2010.They earned 7th place on their first season in the third tier.In 2011, despite a season thrown off by the Tōhoku earthquake and tsunami and the resulting inability of Sony Sendai to play a full schedule, Yamaga earned 4th place and were promoted to J.