NFLPA renews call for natural grass to help prevent injuries after
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Patriots To Again Replace Field Turf At Gillette Stadium
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Patriots are replacing the Gillette Stadium turf after only four
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Field turf not an option for FedEx Field next season - NBC Sports
Patriots replacing field turf after 1 regular-season game
MetLife Stadium gets new synthetic turf; John Mara aims for grass
Titans switch to new synthetic turf at Nissan Stadium
NFLPA calls for grass fields after Aaron Rodgers' Achilles injury