dʒˈænsən wʌz mˈuːvd tə ðə bˈʊlpɛn æz ɐ mˈɪdəl ɹᵻlˈiːvɚ ænd spˈɑːt stˈɑːɹɾɚ fɹʌm tˈuː θˈaʊzənd sˈɛvən tə tˈuː θˈaʊzənd ɪlˈɛvən, ænd ɪn tˈuː θˈaʊzənd twˈɛlv hiː wʌz pˌʊt ɪnðə klˈoʊzɪŋ ɹˈoʊl.
Janssen was moved to the bullpen as a middle reliever and spot starter from 2007 to 2011, and in 2012 he was put in the closing role.