SI.com's Andy Staples analyzes the upcoming showdown between LSU and Alabama, including what players need to step up in order for their team to win.

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CFB national title X-factors for Alabama, Clemson -- IMAGE

Sports Illustrated's Pete Mundo and Colin Becht break down the best matchups in the College Football Playoff National Championship between the No. 1 Alabama Crimson Tide and the No. 2 Clemson Tigers.