Gregorius was hit in the head by a Josh Outman fastball on April 26 against the Rockies and sustained a mild concussion. He played in extended spring training games on Thursday and Friday at the team's Salt River Fields complex in Scottsdale, Ariz.
Gregorius said he was not worried about getting hit again.
"Not really, I was just trying to get my at-bats, trying to work on everything," Gregorius said. "Things happen in the game that you can't control."
In fact, Gregorius was struck in the leg by a pitch during one of the games.
"It's tough like that because you get pitchers from extended and they don't have the control every time," he said. "Everywhere you go pitchers don't always have the control because it's not easy to pitch. One was a little bit wild, I got hit by a pitch, but that's all right. I stayed in there because I really wanted my at-bats, so they put somebody at first for me and I stayed in and hit."
Marte was hitting .186 in 43 at-bats for the D-backs. He made the team out of Spring Training after injuries caused outfielders Cody Ross and Adam Eaton to start the year on the disabled list.
"He's come a long way, certainly, since we watched him last year," D-backs manager Kirk Gibson said of Marte, who played at Double-A Mobile in 2012. "He had a good spring. With all the injuries, he had a chance to play and make an impression. It'll be good for him to go down there and play. He has an understanding of what it's all about here. There are some things we talked to him about before he left that we want him to work on. He'll continue to improve."