Chris Wilder was denied a winning start as Boro manager after Millwall grabbed a controversial equaliser that left the Riverside reeling.

Boro were 1-0 up at the time and were good value for the win, having controlled much of the match, but the new boss, his players, and the fans were left frustrated after being held to a 1-1 draw.

New Boro boss Chris Wilder

Wilder received a standing ovation from the Riverside when was introduced before the kick-off – and his new charges responded with a dominant and entertaining first half display.

Duncan Watmore almost fired Boro ahead after just 12 seconds, and Andraz Sporar was denied by a last-ditch tackle after a great ball from Matt Crooks.

Millwall goalkeeper Bartosz Bialkowski was called upon to make a fantastic save to deny Marc Bola, but Boro were ahead moments later.

Watmore showed great skill and quick feet to get a ball into the box and Crooks arrived to head downwards and past Bialkowski in the visitors goal.

More opportunities came for Sporar and Crooks before the visitors controversially got themselves back in the game.

Watmore was pushed to the ground in the Millwall half, but the visitors were allowed to win possession and return it up field, despite a linesman flagging for the foul. While some Boro players stopped, Millwall advanced, Paddy McNair was felled by a flailing elbow as they raced foward, and the ball somehow ended up in the Boro net with Benik Afobe being credited with the final touch.

The Riverside was in uproar at the decision to allow play to continue, but Millwall were back in the game with their first attack of any note.

Boro could still have restored the advantage before half-time. Marcus Tavernier was twice denied by Bialkowski and Sporar appeared to have a good penalty shout waved away after he was felled in the box.

There were a few hefty challenges flying around. Both Sporar and Watmore were on the receiving end of several and the former was substituted at the break with Josh Coburn coming on.

The visitors had an early threat in the second half, but Bialkowski was soon at full-stretch to deny Tavernier who delivered a great strike.

The midfielder also saw a free-kick deflected wide of the mark after Coburn was felled just outside of the box. Tavernier was also involved when Jake Cooper had to make a spectacular clearance to prevent a great opportunity.

And still Boro looked for a winner. Tavernier had another good cross cleared, Onel Hernandez had a shot blocked, and there were more shouts for a penalty after claims of a handball.

In the 89th minute, Crooks had an opportunity from an angle, but his volleyed shot was high and wide.