TORONTO — The Astros made an alteration to their struggling bullpen before the clubhouse doors opened to the media Saturday morning. Righthanded reliever Paul Clemens was optioned to Class AAA Oklahoma City. Lefthander Brett Oberholtzer was recalled from the RedHawks. Oberholtzer and Robbie Grossman are expected to be available Saturday during a 12:07 p.m. CT contest against the Blue Jays. Clemens, 25, gave up six runs and four hits in 1/3 of an inning Friday during the Astros’ 12-6 loss to Toronto. The Astros’ bullpen gave up eight runs during the seventh inning. “It’s like getting your butt kicked and then you get back up and they kick you again. [...]