He has previously played for the Toronto Blue Jays , Los Angeles Dodgers , and Philadelphia Phillies .
Jayson Richard Gowan Werth ( born May 20 , 1979 ) is an American professional baseball outfielder for the Washington Nationals of Major League Baseball ( MLB ) .
Jayson Richard Gowan Werth has previously played for the Toronto Blue Jays , Los Angeles Dodgers , and Philadelphia Phillies .
Jayson Richard Gowan Werth ( born May 20 , 1979 ) is an American professional baseball outfielder for the Washington Nationals of Major League Baseball ( MLB ) .