Coombs To an extent, but I don't think there's too much wrong with his approach to finishing chances to be fair.
I know people generally hate bringing luck into anything football related, but I do actually think he's been unlucky. Go back and have a look, the large majority of his misses are on target and relatively well hit, often with keepers getting toes and fingertips in the way. If his shot squirmed under Leno's leg no one would be saying it was lucky. Don's law of averages suggests half of them should have gone in.
