Markus Lynn "Mookie" Betts is an American professional baseball outfielder for the Boston Red Sox of Major League Baseball (MLB). He stands 5 feet 9 inches (1.75 m) tall and weighs 180 pounds (82 kg). He bats and throws right handed.

Betts was drafted by the Red Sox in 2011, and made his MLB debut in the 2014 season, sharing time between second base and the outfield. He became the Red Sox starting center fielder in 2014, before moving to right field in 2016.

As a relatively short natural second baseman with a high contact rate and a high level of production when pulling the ball, Betts has been compared to fellow Red Sox player Dustin Pedroia.

Betts is also a professional bowler for the Professional Bowlers Association (PBA). He once bowled a perfect 300 score in the PBA World Series of Bowling. 

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