Smith at the double for Robins
Michael Smith scored twice for Swindon before they held off a spirited second-half fightback from Sheffield United to record an emphatic 5-2 victory at the County Ground.
Swindon began strongly and were unlucky not to go ahead after only four minutes when Yaser Kasim struck the crossbar with a free kick.
They made the breakthrough in the 13th, when Louis Thompson surged across the penalty area and teed up Smith, who lashed the ball beyond Mark Howard and into the bottom-left corner.
Smith doubled Swindon's lead 10 minutes after half time from the penalty spot when Neil Collins tripped Massimo Luongo after a marauding run into the penalty area.
And three minutes later, Obika turned in Bradley Smith's cross for his fourth goal in three games, before Mark McNulty bundled a Ben Davies delivery over the line in the 66th minute to spark a fightback from Nigel Clough's side.
Davies converted Ryan Flynn's cross for United's second, before Andy Williams finished a one-on-one and Thompson struck from outside the area to secure an emphatic three points for Swindon.
Source: PA
