Manchester United manager David Moyes has blamed his team's inability to defend set-plays on Kim Bo-Kyung's late equaliser which cost the Red Devils victory in Wales.
The Scotsman believes their weakness from set-pieces have cost United four points already this season, after Adam Lallana's late leveller for Southampton at Old Trafford last month also robbed the champions of all three points.
Yesterday's draw left his side in sixth, seven points adrift of table-toppers Arsenal after they saw off the Saints 2-0 at Emirates Stadium Saturday afternoon.
Moyes told reporters: "I'm disappointed. It's similar to Southampton where we had the game in our control with a minute to go and conceded from a set-piece. It's cost us, definitely.
"We don't defend well enough and the boy Whittingham puts in a really good ball. We were close but it's now happened in two games, Southampton and this game, where we have lost points in the last minute."
It's another setback for the former Everton boss, who has had an indifferent start at the helm of the Theatre of Dreams since replacing the retired Sir Alex Ferguson in the summer.
However, they're unbeaten in six in the league and could have gone up to second in the table had they hung on in Cardiff.
After Manchester City's dismantling of Tottenham in the early kick-off, United failed to match the result of their noisy neighbours and now sit behind the Gunners, Liverpool, Chelsea and City in the standings.
They had to play without their talisman Robin van Persie yesterday after the striker was ruled out with a problematic groin, an injury that has plagued the Dutchman for some time.
And Moyes could not name a return date for their £24million man: "Robin's groin is the problem at the moment, his toes much better. We are hoping to have both Nemanja (Vidic) and Robin back as soon as we can.
"I hope they'll be in contention for Wednesday but I can't give a definite answer."
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