"We look forward to having a healthy Eric Byrnes and hopefully he has all his weapons to go and he can run and do some of the things he wasn't able to do before he went on the DL," Melvin said.
To make room for Byrnes, outfielder Alex Romero was optioned to Triple-A Tucson.
Byrnes battled tears in his hamstrings since the day before the start of Spring Training and finally gave into the pain on May 27, when the club placed him on the DL.
"I was struggling," Byrnes said. "By the time I went on the DL, I could barely run. I could barely jog on the home run trot."
Byrnes spent Thursday through Saturday with Class A Visalia and though he went only 1-for-12, he did get to the point where he could run without pain.
"It went well," he said. "The legs feel good, ran around the outfield a bunch and chased down balls, got some at-bats. The biggest key is the legs felt good running down the line and everything. I'm excited to be back.
"Bottom line is try to get on base and make something happen."
With the D-backs' offense mired in a collective slump, that's something they are certainly hoping for.
Steve Gilbert is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.