For Martinez, Thursday's running on the field was his first since he underwent surgery for a torn meniscus in his left knee a month ago. He sprinted in a straight line and did some agility work.
"We're just working him on a program to get him to where he's ready to base-run," Rand said.
Cabrera has been running on the field for a couple of days. In addition to sprints and agility work, he has been ranging for ground balls during individual work with Tigers coach Matt Martin, who has been hitting him bouncers at first base from nearly every direction to simulate throws as well as grounders.
"He's started to range [on grounders]," Rand said. "We've been working him now on ground balls for the last four or five days."
Cabrera underwent surgery last October to remove a bone spur from his right ankle and a repair a stress fracture in his right foot. After an offseason of limited weight-bearing workouts, he has progressed quickly over the last 2 1/2 weeks since he reported to camp.
Jason Beck is a reporter for MLB.com. Read Beck's Blog and follow him on Twitter @beckjason. This story was not subject to the approval of Major League Baseball or its clubs.