The Twins designated Staumont for assignment Tuesday, Dan Hayes of The Athletic reports.
With Trevor Richards coming over to Minnesota in a trade with Toronto on Tuesday, Staumont will end up as the odd man out of a spot on the Twins' roster. The 30-year-old was able to get through his first seven MLB appearances of the year without allowing an earned run. However, he's given up 10 earned runs in just 4.2 innings since July 12.