The Leeds United inadvertently wound up costing his team three points.
The Poland international fired wide from 12 yards on 70 minutes after United hitman Patrick Bamford won the spot-kick.
Leeds, who were already leading 1-0 at the time due to Max Lowe's own goal in the first half, wound up paying a big price for their profligacy throughout the contest when Martin rifled home an equaliser in the closing stages.
The Whites' fans were their team's 12th man for so long during the contest, particularly in the first half but Marcelo Bielsa's side failed to capitalise on the advantage.
And Martin, speaking to Derby County's official website, claims that Klich's missed caused something of 'a lull' in the terraces.
He said: "You saw that shift in momentum more so from the fans after the penalty miss.
“There was a little bit of a lull because in the first half this place was absolutely rocking. It’s what we’ve tried to talk about before the game."
Fortunately for Leeds, they stay top of the Championship, but they're dropping silly points at Elland Road this season and it could very well cost them come May.
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