Dinkelman, 27, made his Major League debut this year, appearing in 23 games and getting regular playing time in September. He played second, left and right and finished the season with a .301/.346/.315 line in 78 plate appearances. In 526 Triple-A plate appearances this year, the 2006 draft pick posted a .243/.316/.324 line.
Dumatrait, 30, appeared in 45 games for the Twins this year, posting a 3.92 ERA with 6.3 K/9 and 5.4 BB/9 in 41 1/3 innings out of the bullpen. MLBTR's Steve Adams noted in early September that the success of Glen Perkins and Brian Duensing's likely move to the 'pen made Dumatrait expendable.