Japanese Group 1 racing resumes on Sunday with the 1200-metre Sprinters Stakes, and last year's winner, Mama Cocha (Jpn) (Kurofune), is ready to defend her title. Receiving four pounds versus the majority of the field, the mare finished her season with a fifth to Win Marvel (Jpn) () in the G2 Hanshin Cup upped to 1400 metres in December. Unable to land a telling blow when eighth to Mad Cool (Ire) (Dark Angel {Ire}) in the 1200-metre G1 Takamatsunomiya Kinen in soft going at Chukyo in her 5-year-old bow, Mama...