Definition of "upfield" []

• Away from the defending team's end of the playing field (adjective)
• Describing an NMR resonance at a lower frequency to that of a reference signal (adjective)
• Away from the defending team's end of the playing field (adverb)

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• "Runs decent routes, but because he lacks that second gear and burst upfield, is usually only used on flares, outs and check downs. ..."
• "Quotable: "Kevin's closing speed behind the line and upfield is amazing.""
• "But he opens the new series by hitting Sanders on a deep out, and the receiver darts upfield to make it a 26-yard pickup."