Swindon manager Mark Cooper criticised the officials after the 2-0 defeat at Sheffield United.
Substitute Jamie Murphy scored twice as Sheffield United beat leaders Swindon 2-0.
Sheffield United duo Jamie Murphy and Terry Kennedy have both signed new contracts with the club.
Midfielder Stephen McGinn has joined Dundee on loan from Sheffield United until the end of the season.
Tottenham booked their place in the Capital One Cup final as Christian Eriksen's brace salvaged a 2-2 draw at Sheffield United.
Nigel Clough was left to ponder what might have been after Spurs dashed Sheffield United's Capital One Cup final dreams.
Mauricio Pochettino dedicated Tottenham's Capital One Cup semi-final triumph over Sheffield United to the fans.
Tottenham scored late on after a Sheffield United fight back to secure their place in the Capital One Cup final.
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