Griff Yancey caught James Madison's lone touchdown in last week's 10-3 win at home over Liberty.
But the senior running back will miss Saturday's game against Delaware, according to JMU head coach Mickey Matthews, because of a hamstring issue.
Matthews texted Friday afternoon that he was unsure of the status of senior defensive lineman Nick Emmons, calling him "50/50" for Saturday's game.
Emmons sprained an ankle in the Dukes' win at Virginia Tech last month. The injury kept him out of the Liberty game.
Saturday's game between the third-ranked Dukes and No. 5 Delaware will be JMU's CAA opener. The Blue Hens are 1-0 in conference play after last week's win at Richmond.
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