Welsh prop Rhys Gill scrambled over for the opening score after two minutes and Owen Farrell had no problem adding the extras with the boot.Â
Dan Biggar and Farrell then exchanged penalties before Ospreys centre Ashley Beck grabbed his side’s first try and Biggar’s conversion levelled up the scores.
But the English Champions soon forced their way back in front courtesy of a try from Ernst Joubert.
Biggar added his second penalties but six points from Farrell before the interval gave the hosts a commanding position going into the tunnel.
The Ospreys needed to score first at the start of the second period and they did exactly that with Biggar slotting home another penalty for the Welsh side.
Saracens wing Chris Wyles crossed for Saracens’ third try and Beck then collected his second score for the Ospreys.
Farrell and Biggar exchanged further penalties but Saracens held on to take the victory.
