MINNEAPOLIS -- The Twins optioned right-handed reliever Michael Tonkin to Triple-A Rochester after Wednesday's 6-1 win over the White Sox, and they will make a corresponding roster move before Friday's game in Milwaukee.
Tonkin has posted a 5.73 ERA in 16 appearances this year, with 10 strikeouts and five walks in 11 innings. He was most recently recalled on June 12, posting a 6.00 ERA in four relief outings.
Twins No. 12 prospect leads Minors in homers and won Florida State League Home Run Derby last year
When Eddie Guardado was closing games for the Twins in the early-2000s, he was known for his unflappable nature.