On The Fly...
• Friday's "Duel in the D" will be the 56th meeting (20-30-5) between the Spartans and Wolverines at Joe Louis Arena ... The 312 all-time meetings between the programs make it the most-played rivalry in college hockey.
• In the inaugural battle for the "Iron D" Trophy last season, MSU defeated U-M, 3-2, in overtime before a sell-out crowd of 20,027.
• Three of the last five meetings between the teams have gone to overtime, including each of the last two at the Joe -- Dec. 30, 2016 (L, 5-4) and Feb.