* Struggling Cardiff City beat Southampton 1-0
* Ralph Hasenhuettl took charge of Southampton for the first time
* Makeshift striker Callum Paterson scored the winning goal
* Jannik Vestergaard made a defensive error in the lead-up
* Charlie Austin went close for the Saints in the opening period
* Southampton host Arsenal next, Cardiff travel to Watford
Dec 8 (Reuters) - CARDIFF CITY 1 SOUTHAMPTON 0
Dec 8 (Reuters) - Southampton began life under new manager Ralph Hasenhuettl with a tame 1-0 Premier League defeat at fellow strugglers Cardiff City on Saturday.