Gardner took dry swings to test his strained right elbow and Robertson played catch without feeling any discomfort from a strained left oblique, which is encouraging news for a Yankees club that is looking forward to their respective returns.
"Everything went well, so they'll move on to whatever they have to do tomorrow," manager Joe Girardi said.
The Yankees have ruled out the idea of Robertson rejoining them on this road trip, making his earliest possible return date June 5 at Yankee Stadium against the Rays. Robertson hasn't pitched since May 11.
Girardi said that Gardner, who hasn't appeared in a big league game since April 17, will need to play in a few Minor League rehab games before the Yankees can seriously consider activating him.
Gardner's best-case scenario would be 10 days away, but the Yankees figure to be cautious because any further setback could mean they would be without the speedster until the All-Star break.
"I think he changes our lineup, the speed that he provides and his ability to create runs," Girardi said. "Everyone's going to have to hit and contribute, but he does give you a little different element than the rest of our team."