The 27-year-old Taiwanese import signed a three-year, $11.388MM contract with the Orioles prior to the 2012 campaign and played an integral part in the team's surprising playoff berth. Chen made 32 starts and racked up 192 2/3 innings, averaging 5.5 strikeouts and 3.0 walks per nine innings pitched, which was good enough to earn him a fourth-place finish in the AL Rookie of the Year voting.
Chen isn't the only young pitcher that Boras has added to his clientele this year. Back in February, Marlins rookie Jose Fernandez hired Boras as well. For information on more than 1700 players, check out MLBTR's Agency Database.