ADJECTIVE (1)

1. toward or in the defending team's end of the playing field;
- Example: "he threw to a downfield receiver"


ADVERB (1)

1. toward or in the defending team's end of the playing field;
- Example: "he caught the ball and ran downfield 15 yards"

WordNet (r) 3.0 (2006):

downfield
    adv 1: toward or in the defending team's end of the playing
           field; "he caught the ball and ran downfield 15 yards"
    adj 1: toward or in the defending team's end of the playing
           field; "he threw to a downfield receiver"