PITTSBURGH — The Pittsburgh Pirates bullpen has struggled this season and they've lost another one of their arms.The Pirates placed right-handed pitcher Wilber Dotel on the 15-day injured list with a right lat muscle strain. They have recalled right-handed pitcher Brandan Bidois, who they opitoned to Triple-A Indianapolis just a day prior on June 12.Dotel joined the Pirates for his second MLB stint this season back on May 20 and posted an 8.49 ERA over six outing, with 11 earned runs allowed over 11.2 innings pitched, plus 15 strikeouts to six walks.He had great success early on, with just one earned run allowed over his first 10 innings and four outings, with three consecutive outings throwing three scoreless innings out of the bullpen and 13 strikeouts to just three walks.Dotel then struggled in his past two outings at PNC Park, against the Los Angeles Dodgers on June 9 and the Miami Marlins on June 13.He gave up five hits, a walk, a home run and six earned runs while getting no outs in the seventh inning against the Dodgers, who broke a 2-2 tie and ended up defeating the Pirates 12-3.Dotel gave up four earned runs over 1.2 innings vs. the Marlins in the seventh inning, which the road team used to win 8-3 after also breaking a 2-2 tie. The Pirates bullpen now features right-handers in Bidois, Isaac Mattson, who the Pirates also recalled from Triple-A, Carmen Mlodzinski, Yohan Ramírez and Dennis Santana, plus left-handed pitchers in Mason Montgomery, Evan Sisk and Gregory Soto. Make sure to visit Pirates OnSI for the latest news, updates, interviews and insight on the Pittsburgh Pirates!Add us as a preferred source on GoogleFollow