Gloucester are through to the Challenge Cup semi-finals

Both clubs struggled to get their back-lines flowing, but Carreras kept his cool to kick a vital 18 points.

Gloucester Rugby will now have a home EPCR Challenge Cup semi-final, facing either Benetton Rugby or Connacht Rugby for a place in the final at Tottenham Hotspur Stadium on 24 May.

Both teams crossed once in an evenly-matched first-half, Ospreys wing Keelan Giles going over first.

The try was made by full-back Jack Walsh, who had opened up the home club’s defence with a piercing run before laying off to Giles, who finished well.

Gloucester Rugby struck back with an unconverted score from hooker Seb Blake, the pack successfully bundling over following a 5m lineout.

Ospreys fly-half Owen Williams converted Giles’ score and added a penalty, Giles adding another from the tee with the clock in the red, but it was Gloucester Rugby who led at the break thanks to three Carreras penalties.

Carreras continued to keep the scoreboard ticking over in the second period as the Gallagher Premiership club’s pack began to assert dominance.

Ospreys increasingly struggled to hold possession and gain territory, with mistakes allowing Carreras to kick a further three penalties and ultimately fire Gloucester Rugby into a home EPCR Challenge Cup semi-final.