Originally written on Fox Sports  |  Last updated 11/28/12
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Logging more tackles than any other player since 2011 is outstanding. Doing so in today's NFL makes what Minnesota Vikings linebacker Chad Greenway has accomplished even more impressive. The defensive environment in which Greenway notched 261 stops in his past 27 games is different than just a few years ago, let alone during previous generations like when his franchise fielded the vaunted Purple People Eaters in the 1960s and 1970s. The biggest change stems from the Collective Bargaining Agreement reached between the NFL and its players in summer 2011. New rules have reduced the number of full-contact practices that can be held, especially late in the season. This was designed to improve player health and safety, but a side effect is sloppier defense on game days. "You wonder why tackling isn't what it used to be? Look no further than the new CBA," Vikings head coach Leslie Frazier told FOXSports.com from inside his office at team headquarters. "It's hard to teach tackling and ...
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