Through Week 13 last season, 18.8 percent of kickoffs resulted in touchbacks. This year, the figure is 45.9, above the 30 percent the N.F.L. anticipated when it moved kickoffs forward 5 yards.
Source: http://feeds.nytimes.com/click.phdo?i=9b3fdb94adb209b4141288b40f6c6e49
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