The Mariners have made the Emerson Hancock move official. He will make his Major League Debut tonight and wear the #62 The team made the following roster moves -Optioned Devin Sweet to TacomaRainiers (Photo by _LivLyons) -DFA'd Zach Muckenhirn (Photo by Paul Sancya) #SeaUsRise #SeattleMariners #Baseball #MLB #MarinersBaseball #SeattleBaseball #DevinSweet #ZachMuckenhirn #TMobilePark #Seattle #SeattleSports #CirclingSeattleSports