Lowell went 1-for-5 in the opener of a stint in which he will play four times in six days.
The veteran corner infielder/DH has been on the disabled list since June 24 with a right hip strain. Lowell had a cortisone shot in his surgically repaired hip on Monday.
"I've been doing my rehab work with [physical therapist] Scotty Waugh at the stadium and more range of motion," said Lowell to reporters at Pawtucket, R.I. "Obviously it feels much better being on the field and doing baseball stuff. I think everything's been positive up to now."
There has been nothing significantly wrong with Lowell's health this season. His biggest problem has been not finding enough at-bats on a roster that has Kevin Youkilis at first base, Adrian Beltre at third and David Ortiz as the designated hitter.
"My feelings and sentiments haven't changed since Spring Training. I do feel better than in Spring Training," said Lowell. "Even before needing the shot, that position right there [in the hip] is better than how I was last year. It's just a year removed. There's more time for everything to stabilize and strengthen. That's what's been frustrating about this season. When you feel better than what you played in the year before, you want to have the opportunity. I think that's human nature and that's normal. If I didn't feel that way, then there would be something abnormal about it."