In truth, it was simply time for Sardinas to get regular playing time at shortstop. He's expected to be the regular starter at that position for the Triple-A Colorado Springs SkySox this season, so the Brewers optioned Sardinas and outfielder Shane Peterson to that affiliate in the latest round of camp cuts.
Sardinas' recent hot streak, which included a 4-for-4 game against his former team, the Rangers, on Saturday, and a 3-for-3 game against the A's on Wednesday, boosted his batting average to .294. He'd been bidding for a utility job with the Brewers, who are down to Hector Gomez and non-roster invitee Elian Herrera as their options to back up starting shortstop Jean Segura.
The Brewers acquired Sardinas and two other Minor Leaguers from Texas for Yovani Gallardo.
"It's very difficult to come to a new team, 21 years old," Roenicke said. "I thought he was doing a good job for us. He's young, but he's a confident guy. I was really happy the last couple of games -- offensively, he's really swung the bat well."
Sardinas will primarily play shortstop for the SkySox, but could also man second base and third base occasionally in an effort to stay sharp in case the big league club needs him.
Peterson, an offseason waiver claim, batted .296 with a home run and four RBIs in 27 Cactus League at-bats.
"Offensively, I can see why he puts up the numbers he does," Roenicke said, a reference to the 27-year-old's .835 OPS over parts of four seasons at the Triple-A level in Oakland's system. "He's got a really flat swing, drives the ball to all parts of the field, which I think is always going to allow him to be a good hitter. Defensively, I put him in center [field] some, but I think he's going to be good in the corners."
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.