The Diamondbacks began play Monday with a major-league worst 4-11 record and are already six games behind the first-place Dodgers in the National League West, so they have decided to shake things up their starting rotation.
Jack Magruder of FOX Sports Arizona reports that the Diamondbacks will move the struggling Trevor Cahill to the bullpen. Mike Bolsinger has been called up from Triple-A Reno and will make his first major league start Saturday against the Rockies.
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