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Butler spent most of the 2015 season in the Major Leagues, playing in 88 games (61 starts). His .344 batting average through June 15 was the highest by any Major League rookie on that date since 2001, when Albert Pujols (.354) and Ichiro Suzuki (.350) did it for the Cardinals and Mariners, respectively, en route to each winning a Rookie of the Year Award.
The Rays will head to Major League Baseball's Winter Meetings, which start Monday in Nashville, Tenn., with a full 40-man roster.
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.