A complaint involving a banned bisphosphonate has been lodged by the California Horse Racing Board (CHRB) against trainer Jeffrey Metz, summoning him to a stewards' hearing. According to a CHRB complaint dated Apr. 29, a positive for tiludronic acid was confirmed via split-sample testing from Camino de Estrella (Mineshaft), who finished sixth in the third race Sept. 27, 2020, at Santa Anita. The now-7-year-old gelding was claimed that day for $20,000, and has finished no better than sixth in four subsequent starts for a four-way partnership that includes trainer Bill...