Nevada Union High School graduate and 2012 Midland Rockhound pitcher Gary Daley Jr. has been suspended 50 games after testing positive for banned substances. Daley, who went 10-10 with a 5.11 ERA in 2012 for the Rockhounds, a Double-A affiliate of the Oakland Athletics, tested positive for methylphenidate, according to an Associated Press report. Daley and the Rockhounds could not be reached for comment Friday. Daley’s high school baseball coach Ted White said he was surprised to hear of the positive test and suspension. “He was a great player for our program,” White said. “He was one of our starters, …