Right-hander Tyler Duffey brought up from minors by Twins
The 27-year-old right-hander allowed three hits and a pair of unearned runs in 11 innings over four relief appearances for Triple-A Rochester this season.
He is 16-16 with a 5.29 ERA in 36 starts and 56 relief appearances for the Twins over the past three seasons. He was 2-3 with a 4.94 ERA in 56 relief appearances with Minnesota last year.
Duffey was recalled Tuesday and took the roster spot of right-hander Alan Busenitz, who was optioned to Rochester after allowing two runs in two-thirds of an inning in the Twins' 14-1 loss to the New York Yankees on Monday night.
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