Leeds unbeaten run ended by Millwall

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Leeds United's Kalvin Phillips in action with Millwall's Aiden O'Brien Action Images/Adam Holt

LONDON (Reuters) - Table-topping Leeds United suffered their first defeat of the Championship season with a 1-0 loss at battling Millwall on Saturday.

The early season pace-setters had won their previous four league fixtures without conceding but Aiden O'Brien scored the solitary goal for deserved winners Millwall who climbed to 15th.

Leeds are one of three sides locked on 17 points alongside Wolverhampton Wanderers, who beat Nottingham Forest 2-1, and Cardiff City, who drew 1-1 with Sheffield Wednesday.

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Millwall's Byron Webster celebrates their first goal scored by Aiden O'Brien (not pictured) Action Images/Adam Holt

Preston North End and Ipswich sit two points adrift after 3-1 and 2-0 wins over Birmingham City and Bolton Wanderers while Sheffield United also have 15 points despite a 1-0 loss at Norwich City.

Middlesbrough climbed to seventh with an entertaining 3-2 victory against Queens Park Rangers, Bristol City thumped Derby County 4-1 and Aston Villa cruised to a 3-0 win at Barnsley.

Sunderland and Hull City, both relegated from the Premier League last season, drew 1-1, Burton Albion beat Fulham 2-1 and Reading drew 1-1 at Brentford.

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Millwall's Aiden O'Brien celebrates scoring their first goal Action Images/Adam Holt

(Reporting by Tom Hayward, editing by Ed Osmond)

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Leeds United's Stuart Dallas looks dejected after conceding a goal Action Images/Adam Holt

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Millwall fans Action Images/Adam Holt

Soccer Football - Championship - Millwall vs Leeds United - The Den, London, Britain - September 16, 2017 Millwall's Jordan Archer Action Images/Adam Holt