The Atletico man took his World Cup tally up to three with a fortuitous goal to down Iran, who gave the Roja plenty of problems in a spirited display
Diego Costa has denied stamping on Iran goalkeeper Alireza Beiranvand after helping his side take a surprisingly hard-fought victory over the middle eastern nation on Wednesday .
Having scored twice in the 3-3 draw against Portugal, the Atletico Madrid forward was on target again with a fortuitous effort that rebounded off his knee and into the net.
It proved the only goal of an entertaining match, although Iran saw one attempt chalked off for offside with help of the VAR.