the player whose position is right field.
Origin of right fielder
An Americanism dating back to 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for right fielder
Historical Examples of right fielder
Out toward the corner of the Carey building the right-fielder was stepping back.
Joe looked with longing eyes upon a stretch of undefended territory behind first base and out of reach of right-fielder.