It looked like reliever Tim Wood was ready to finish spring training strong after he needed just 11 pitches to get four outs on Saturday against the Rays.
But Wood arrived at the ballpark on Sunday complaining of a sore shoulder, so his quest to make the team is on hold.
"He doesn't feel right,'' Twins General Manager Terry Ryan said, "so we're going to have to take care of that.''
Ryan said he was unsure how long Wood will be sidelined but he will not need an MRI exam.
"It's ironic, because he threw the ball on Saturday better than he has all spring,'' Ryan said.
After giving up five runs on March 5 to Tampa Bay, the two-time International League reliever of the year gave up just one run over this next 6 1/3 innings. He also worked to speed up an alarmingly slow delivery. He's out of options, so pitching better down the stretch could have made the Twins more comfortable with bringing him north.
With Wood sidelined, the Twins' bullpen picture is clearer, maybe even set.
Glen Perkins will close, with Jared Burton the key setup man. Brian Duensing will be the only lefthander in the pen, as Tyler Robertson has pitched poorly.
Alex Burnett, Casey Fien, Ryan Pressly and Josh Roenicke could round out the bullpen. Roenicke helped his cause on Sunday with two scoreless innings.