Complex sentence: As a freshman in 2005, Kluber performed as a relief pitcher, compiling a 2--2 win--loss record with a 7.82 earned run average (ERA) in 25 innings pitched.
Split into simpler sentences: As a freshman in 2005, Kluber was used as a relief pitcher. He compiled a 2--2 win--loss record with a 7.82 earned run average (ERA) in 25 innings pitched.