Leeds United fall victim to refereeing error as 'offside' goal incorrectly chalked off vs Middlesbrough
Leeds United midfielder Ao Tanaka was denied a fifth goal of the season by an incorrect offside call at the Riverside Stadium.
Tanaka believed he had doubled Leeds' first-half advantage against Middlesbrough before his back post effort was chalked off by assistant referee Darren Williams.
Leeds went in front inside three minutes thanks to a low Manor Solomon cross and Dan James finish from inside the six-yard box, before weathering a spell of heavy pressure from the home side.
United rallied and should have seen the scoreline read 2-0 before the half-time interval as Tanaka sneaked around the back of Hayden Hackney to latch onto a deep Solomon cross which landed on the Japan international's toe inside the six-yard box.
Initially thought to be a tight offside call, Sky Sports replays showed Tanaka to be onside at the time the ball was played and consequently his goal should have stood.
Nevertheless, Leeds went in a goal up at the break.