Jay hit off a tee and did some soft toss in his first workout since the injury that sent him to the disabled list on May 16. He said he is hopeful to rejoin the team during its upcoming 10-game road trip to Atlanta, New York and Houston.
The outfielder, who hit .343 with two home runs and eight RBIs in his first 27 games this season, wasn't sure if he would need a rehab assignment before returning to the active roster.
"We'll see how these next couple days go," Jay said. "Today was just the first day. I still have to do a couple more things. It's coming along. It's definitely getting better."
General manager John Mozeliak said Jay was on track to return soon after his 15 days on the disabled list were up.
"Jay may be a day or two extra, but he swung the bat today and felt pretty good," Mozeliak said.