Gabriel Ho-Garcia scored the first "double-goal" in EHL history as he finished off a scrappy move, putting the German side on course for a strong opening statement at the EHL ROUND1 in Barcelona.
"It being my first EHL game ever, I'm obviously excited to score and its also something special to be that first guy to score one that counts as two," Canadian international Ho-Garcia said of that moment.
Hellwig then got another close range goal to put seven in the difference. Cardiff's goalkeeper James Fortnam made a series of good saves while Jack Pritchard made a brilliant stop on the goal line from a drag-flick.
But the Welsh champions were unable to get too much going in attack bar Luke Hawker's threatening cross and Uhlenhorst were always comfortable.
Tobias Matania scored the fourth field goal – after sitting out both a green and yellow card – from a great counter-attack. A Jan Schiffer completed the win with a corner goal on the final hooter.
"We just want to come out of this weekend with two wins and we played well and looking forward to Sunday," Ho-Garcia said of the side's targets for the weekend with the club he joined just a few weeks ago.