He appeared in 10 games (eight starts) for the Twins in 2013, going 1-3 with a 6.85 ERA in 47 1/3 innings. He also made 16 starts for Triple-A Rochester.
Hendriks was signed by the Twins as an international free agent in '07, and would be the third Australian-born Oriole in club history (John Stephens in '02 and Damian Moss in '03) if he makes it to the Majors with Baltimore.
Over six seasons in the Twins' Minor League system, Hendriks went 42-28 with a 2.99 ERA in 100 games (98 starts).
Joey Nowak is a reporter for MLB.com. Follow him on Twitter at @joeynowak. This story was not subject to the approval of Major League Baseball or its clubs.