Sanzenbacher, a wide receiver who has started just one game in his two-year NFL career, ran a punt back 71 yards late in the third period to give the Bengals a 27-10 lead and he caught a 36-yard touchdown throw from John Skelton in the fourth quarter.
Atlanta's only touchdown came on an 8-yard pass from Dominique Davis to Jason Snelling in the third quarter that brought the Falcons within seven points.
Cincinnati produced the game's final 17 points
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