Arsenal boss Arsene Wenger says Video Assistant Referees are required in the Premier League after his side were denied victory at West Brom by a controversial late penalty.
Alexis Sanchez's free-kick deflected in via James McClean to put the Gunners on the brink of victory at The Hawthorns as Wenger ticked onto 811 Premier League games managed - a new record.
However, Mike Dean awarded the Baggies a penalty late in the game after Kieran Gibbs' cross hit Calum Chambers' arm from point-blank range.
Arsenal fumed at Dean after the match with Petr Cech earning a yellow card, and Wenger then launched a scathing attack on the standard of officiating.