MONTPELLIER (Reuters) - Australia may have to send for more reinforcements after utility back Scott Staniforth was injured in Sunday's 55-12 World Cup win over Fiji.

The Wallabies scored seven tries to book themselves a place in the quarter-finals against England or Tonga but could lose Staniforth for the rest of the tournament after he injured his shoulder.

Australia have already been hard hit with injuries to their backline with Mark Gerrard sent home after hurting his knee in the first game against Japan and captain Stirling Mortlock and flyhalf Stephen Larkham both recovering from problems.

Flyhalf Berrick Barnes also suffered a corked leg while reserve scrumhalf Sam Cordingley banged his knee against the Fijians but coach John Connolly said his major concern was with Staniforth, who left the field just moments after coming on in the second half.