FILE- In this Dec. 28, 2016, file photo, Northwestern running back Justin Jackson (21) runs for a touchdown against the Pittsburgh during the third quarter of the Pinstripe Bowl NCAA college football game in New York. Over the last three seasons, no Power Five team has relied on a running back as much as Northwestern has relied on Jackson, an old-school workhorse at a time of tailback-by-committee and early NFL draft entrants. (AP Photo/Julie Jacobson, File)
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