"Tonight will be a big night," manager John Gibbons said of Morrow. "We don't want to rush it. He's got to show us he's good and healthy."
Gibbons was referring to his right-hander, but the same could be said for Reyes. Like Morrow, he will be playing in his first rehab game since hitting the disabled list.
The Blue Jays shortstop is expected to log a maximum of five innings, while Morrow will throw in the range of 40-50 pitches.
For both players, it's just another step in the right direction, with both of them expected to face stiffer competition in either Double-A or Triple-A before returning to the Majors.
Teddy Cahill is a reporter for MLB.com. Follow him on Twitter at @tedcahill. Evan Peaslee is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.