Aitor Karanka says he is 'not at all concerned' despite Middlesbrough's attack ranking as the worst in the Premier League.
The Spaniard has so far refused to bow to supporter pressure and play two up front this season, preferring to deploy Alvaro Negredo as a lone frontman.
But Boro have scored just 13 times from 16 matches - the lowest total in the league - and they have had fewer shots per game (nine) than any other team.
'It is not a concern at all,' said Karanka, who will again name one striker at home to Swansea on Saturday afternoon.