Watford boss Javi Gracia lamented the lack of VAR after his side were denied victory at Everton by a last-gasp Lucas Digne free-kick.
The Hornets were on course for their first victory in six Premier League games before Digne struck six minutes into injury time to secure a 2-2 draw at Goodison Park.
Following the final whistle Gracia was unhappy at a couple of contentious refereeing decisions that went against his side.
After Richarlison's opener stood despite Theo Walcott touching the ball in an offside position, Everton's Yerry Mina avoided a second yellow card for a coming together with Isaac Success.