LOS ANGELES: Hanley Ramirez made his Boston season debut a memorable one and the Toronto Blue Jays spoiled Alex Rodriguez’s return to the Bronx in the busiest opening day in Major League Baseball history. Ramirez highlighted a smashing day for the heavy hitters, belting a grand slam as 28 teams started their 2015 seasons on Monday (Tuesday in Manila). Ramirez smacked a pair of homers and the Red Sox blanked Philadelphia 8-0. Ramirez also had one of Boston’s four solo home runs off Phillies starter Cole Hamels. Drew Hutchison’s six strong innings and a five-run third off Japan’s Masahiro Tanaka carried the Blue Jays to a 6-1 win in Rodriguez’s first major league game since September 25, 2013.