VandenHurk, 26, appeared in four games for the Orioles last season, including two starts. He allowed eight earned runs in nine innings, and spent the majority of 2011 in Triple-A, going 9-13 with a 4.43 ERA while posting a .239 average against.
The 6-foot-5, 215-pound VandenHurk, an Eindhoven, Netherlands, native, has appeared in 46 Major League games in the last five seasons with Baltimore and Florida, going 8-10 with a 5.97 ERA.
"We've always had very good reports on him," Blue Jays manager John Farrell said. "He's always had very good arm strength, he's had good swing-and-miss, particularly effective against right-handed hitters. He's a guy that has started in the past, and with that starting experience behind him, he's a guy that can pitch multiple innings out of the bullpen."
To make room for VandenHurk, right-hander Alan Farina was placed on the 60-day disabled list. Farina underwent Tommy John surgery last June and is expected to be out at least the next three months but is set to begin throwing in less than two weeks.
The 25-year-old Farina had been dealing with arm issues for the past few seasons before finally undergoing surgery. He went 2-1 with a 1.56 ERA in 17 games for Double-A New Hampshire before being shut down for the year.
"It was an ongoing thing," Farina said. "I actually tore it three years ago in '08, so it was a tear and then it just didn't recover, so I finally had to get it done.
"The scar tissue kind of healed up for a little while and held it down. Then eventually it's one of those things where it's not going to heal itself, so you have to get it done."