Blue Jays manager John Farrell said Janssen has what it takes to close games while Sergio Santos recovers from right shoulder inflammation that has sidelined him since April 21.
Janssen doesn't have an overpowering strikeout pitch or prototypical "closer stuff," but Farrell defended him by saying: "Three outs is closer stuff at the right time of the game."
"Swing-and-miss [stuff] is certainly a benefit, however you get that," Farell added.
Wednesday was Toronto's first 1-2-3 ninth inning of the season. "And it felt good," Farrell said. "[Janssen] did what he's very capable of doing, he pitches aggressively, he attacks the strike zone, he's able to use his cutter and his fastball to combat left-handed hitters."
Farrell added that closers must do three things to be successful: Throw strikes, not allow rallies by walking batters and have a short-term memory to forget squandered save opportunities.