It’s expected to be a big week for Michigan recruiting. With several four- and five-star 2017 Michigan top targets making decisions, the Wolverines could soar in the recruiting rankings by week’s end.

But on Wednesday, Michigan lost a commitment it already had.

Four-star running back A.J. Dillon announced that he’s flipping from Michigan to Boston College:

Dillon is the top player in Massachusetts and the No. 301 player overall in the 2017 class. He committed to Michigan back in March and even took an official visit to Ann Arbor over the weekend.

But instead, the Lawrence Academy (MA) recruit will stay local at Boston College. The 6-1, 230-pound back is actually rated the No. 4 athlete in the 2017 class by 247sports.

Michigan does already have a commitment from four-star tailback O’Maury Samuels. Michigan could also land either five-star Alabama commit Najee Harris or four-star former Iowa commit Eno Benjamin.

The Wolverines have commitments from 12 four-star recruits, which is still good for second in the B1G in the 2017 class rankings.