Brentford stuttered in their fight to secure automatic promotion to the Premier League after losing 2-0 at home to Barnsley.
Goals from Conor Chaplin and Carlton Morris inflicted Brentford's fourth league defeat of the season in a hard-fought contest with plenty of physicality.
The Bees missed a golden opportunity to go top of the table over Norwich, and are five points ahead of Swansea in third who have two games in hand.
Barnsley hassled and harried Brentford throughout the match, notching up 14 fouls in the first half alone.