BALTIMORE — A spikes-high slide. A near beanball. Harsh talk in the clubhouse. The rivalry between the Boston Red Sox and Baltimore Orioles soared to a new level over the weekend, and there’s no telling what might happen when they soon meet again. A tempestuous three-game series between these AL East foes wound up with Orioles star Manny Machado seeing a fastball sail behind his head and Matt Barnes getting ejected for throwing it Sunday in Boston’s 6-2 victory. The high, very inside pitch came two days after Machado spiked Red Sox second baseman Dustin Pedroia with an aggressive slide. Pedroia watched from the dugout for a second straight day with knee and ankle injuries.