The slugger said Friday he was doing the same agility exercises on his strained right Achilles tendon as he did on Thursday. Ortiz took batting practice before Friday's game and worked out in right field at Fenway Park.
"He says he feels better, progressing normally towards a complete recovery," manager Bobby Valentine said Friday.
Ortiz is at least two days away from doing more strenuous power running drills. The designated hitter has not played since July 16, when he suffered the injury stepping on second base on an Adrian Gonzalez home run.
While Ortiz is on the mend, shortstop Mike Aviles was back in the lineup Friday after missing the last five games with turf toe.
Aviles batted ninth in his first game since Saturday in New York. He had an injection in his right foot Tuesday.
"His toe feels 100 percent," Valentine said. "As soon as the injection was settled in, he felt really good. [Thursday] he was like 95 percent, to the point where he could have played. He's hungry to get back in there. I think the toe affected some of his at-bats at the end there."