THERE’S room for improvement warned Leeds United head coach Marcelo Bielsa after Saturday’s 2-0 Sky Bet Championship win against Rotherham.

The Whites head to Swansea City on Tuesday on the back of an unbeaten start to the season but only after finding the Millers a tough nut to crack at Elland Road.

Second-half goals by Luke Ayling and Kemar Roofe meant that the charismatic Argentinian head coach became the first Leeds manager to win his opening four matches.

Bielsa, speaking through an interpreter, said: “Unlike our first two league games, today was more of a Championship game.

“Rotherham had three clear moments where they could have scored a goal, which was because of the mistakes we made.”

Leeds may have issues at the back which still need ironing out, but the current 4-1-4-1 style adapted by Bielsa is great to watch.

Unlike the opening games against Stoke and Derby, this was a game Leeds were expected to win, but Paul Warne set his Rotherham side up well to combat the home side’s free-flowing football.

Two defensive midfielders were deployed in front of the visitors’ back four, with Semi Ajayi sticking close to playmaker Samuel Saiz.

It was a defensive mesh which left Leeds trying to thread the ball through the eye of a needle in the middle, but Rotherham’s game plan was not all about defending.

They soaked up plenty of pressure yet always had an outlet in front man Michael Smith, who held the ball up well to build attacks.

The South Yorkshire side could have led at half-time after defensive errors opened the door.

Goalkeeper Bailey Peacock-Farrell failed to read a pass from his skipper Liam Cooper but redeemed himself by producing a fine point-blank block to deny Ryan Williams.

Minutes later, Jon Taylor’s 20-yard shot rattled the inside of the left upright, and then Matthew Palmer sent the ball whistling narrowly over the bar.

Warne said: “At half-time we praised the lads and told them that they can’t drop the standards.”

Unfortunately for him they did.

Ayling headed his first Leeds goal, and his first goal since April 2015 when he was a Bristol City player, after a 52nd-minute scramble in the area.

After that it was all Leeds.

“The Leeds players are so trustworthy on the ball it made us do a lot of running, which ultimately killed us,” said Warne.

Rotherham had nothing left in the tank as Leeds continually motored forward with pace and precision.

The second goal after 72 minutes was worthy of winning any match.

From close to their own corner, Leeds worked the ball slickly upfield before Kalvin Phillips delivered a peach of a pass for Roofe to outpace the right flank of Rotherham’s defence and finish with aplomb.

With the game won, Bielsa tweaked his team in added-on time by sending on central defender Pontus Jansson and Leeds settled in to the Argentinian’s famed tactical 3-1-3-3 formation for a few minutes – a hint of a things to come perhaps?

Leeds United: Peacock-Farrell, Ayling, Beradi, Cooper, Douglas, Phillips, Klich (Jansson 90), Hernandez, Saiz (Baker 60), Alioski, Roofe (Bamford 86). Subs (not used): Blackman, Pearce, Harrison, Shackleton

Rotherham United: Rodak, Vyner, Raggett, Wood (Vassell 75), Marrock, Vaulks, Palmer (Manning 66), Taylor, Williams, Smith (Proctor 78). Subs (not used): Biloe, Ball, Robertson, Newell. Caution: Taylor

Ref: Robert Jones (Merseyside) Att: 33,699