Complex sentence: He played in Major League Baseball (MLB) with the Philadelphia Phillies from 2000 until the conclusion of the 2014 season, during the offseason, he was traded to the Los Angeles Dodgers for the 2015 season.
Split into simpler sentences: He played in Major League Baseball (MLB) with the Philadelphia Phillies from 2000 until the conclusion of the 2014 season. During the offseason after the 2014 season, he was traded to the Los Angeles Dodgers for the 2015 season.