So far, he's done just that. In his first eight at-bats he had six hits and also drew five walks without striking out.
"He's played real well and he's been focused and he's done everything that we've asked," said Towers, who is in his first full season as GM in Arizona. "If I had to pick one guy out that I've been most impressed with, it's been him."
Roberts has played second, third, right and left for the D-backs over the past two seasons. He might wind up adding another position to his repertoire before Spring Training ends as Towers said he'd like to see him play some short.
"I would imagine before the end of the spring he'll probably see some time over there," Towers said. "He's a very valuable guy because he can play everywhere, including the outfield. He's got some power, he's shown me great plate discipline."
After playing well in 2009, when he made the club as a non-roster invitee, Roberts had a poor spring in 2010, was shipped to Triple-A and got just 66 at-bats in the big leagues.