Greg Vanney
In 2017 , as manager of Toronto FC , Vanney won the domestic treble by winning the MLS Cup , Supporters' Shield and the Canadian Championship . 
<triplet> MLS Cup <subj> 2017 <obj> point in time <subj> Toronto FC <obj> participating team <triplet> Canadian Championship <subj> 2017 <obj> point in time <subj> Toronto FC <obj> winner