Newcastle Jets defender Nikolai Topor-Stanley's injury is not as bad as the club first thought.

The 23-year old was forced from the pitch with a knee problem in the first half of the Jets' season opener against Adelaide United, which ended 0-0, on Friday night.

Initially it was feared that Topor-Stanley had ligament damage but he has since been cleared of any serious problems with Jets physio Adam Leslie confirming it was just a corked muscle.

"He is going really well and probably won't need scans at this stage," Leslie told the Newcastle Herald.

"He improved yesterday and has improved again today.

"He has most of his range back and is going really well. I will reassess him tomorrow morning.

"It might be the case where he has a session off and we ease him back into training during the week."

The Jets take on new A-League club Melbourne Heart at EnergyAustralia Stadium on Friday night in week 2 of the 2010/11 season.