The Whites played out a 0-0 draw against Chelsea on Saturday lunchtime, but were undone by a corner and a rebounded penalty against West Ham on Monday night.
Craig Dawson’s headed effort for the Hammers was the 14th that Marcelo Bielsa’s side have conceded from a set-play this season – the highest tally in the division.
And Stelling has suggested that Leeds must stop giving away preventable goals from dead ball situations.
Speaking on Soccer Saturday, he said: “One thing that they have to do, there’s no about it, they have to learn how to defend set-plays.
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"I’m sure all Leeds fans have their hands over their eyes at set-plays – actually, looks like the players do at times as well!”
Former Crystal Palace striker Clinton Morrison agreed with the host, adding: “It’s too easy. It’s poor.
"You can see the goal against West Ham. It’s a good ball in from Cresswell, and I know Antonio pins the goalkeeper, but he has to come out and do better.
"It was so easy, you thought there had been a foul. It was such a free run and Dawson gets a free header. It’s poor marking.
"It’s been like that all season for Leeds so far”.
Leeds’ next game in the Premier League is against Fulham at Craven Cottage.
Thankfully for Bielsa’s side, the West London outfit have scored just three goals from set-pieces this season, the lowest tally in the division.