Sano, 21, hit .200/.385/.800 in six Grapefruit League games, including hitting two massive home runs. His first homer came on March 9 against Pirates right-hander Gerrit Cole, and his second came on Saturday off Cardinals left-hander Tyler Lyons.
Sano, who missed all of last season after undergoing Tommy John surgery in March, also made some impressive plays at third base, but he did make a throwing error. He also made an error in a "B" game against the Pirates last week.
Wheeler, 24, made two Grapefruit League appearances, throwing 1 1/3 scoreless innings. He'll be able to stretch out in Minor League camp, as he's expected to be part of the rotation at Triple-A Rochester.
Oliveros, 26, was bothered by a sore right shoulder early in camp and made just one appearance, coming on Friday, when he threw a scoreless inning against the Pirates. Oliveros, who was a September callup for the Twins last year, will be a part of the bullpen at Rochester.
With the roster moves, the Twins now have 45 players in camp.
Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.