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Posted by ESPN.com's Adam Rittenberg
Happy New Year to all. It's a huge day for the Big Ten, and here are some of the key story lines.
"I think it's been a mental-toughness issue," senior linebacker James Laurinaitis said. "You look at those games and it seemed something happened, like a penalty when we've got them stopped, or a touchdown gets called back, and guys' heads just went down, 'Dang, that's it.'"