Sydney: Pace spearhead James Anderson is a doubt for England's tri-series opener against Australia in Sydney as he recovers from a knee injury, skipper Eoin Morgan said on Thursday.

Anderson looked fit in his return to the team in their 216-run hammering of a local side in Canberra on Monday, but sat out Wednesday's win over the Prime Minister's XI. Morgan said the decision was made to rest their spearhead to give him the best possible chance to play in Friday's tri-series opener.