One who throws with arm roughly parallel to the ground.(noun)
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Use "sidearmer" in a sentence
""We've got to remind ourselves that two years ago this guy was a (sidearmer)," Maddux says."
"Most of the pitchers are highly regarded prospects except for former Padre reliever Blaine Neal and former D-backs sidearmer Mike Koplove."
"Mr. O'Day, a relatively unknown sidearmer who made it to Anaheim unexpectedly out of spring training in 2008, follows Mr. Rodriguez to the National League and into a wide-open Mets bullpen."