Will Grigg has been ruled out of Northern Ireland's Nations League game against Bosnia & Herzegovina on Monday.
The Wigan striker suffered a hamstring injury and was visibly struggling in the latter stages of Northern Ireland's match in Austria, which they lost 1-0.
Grigg came off the bench in the 79th minute, and could have equalised after Marko Arnautovic's opener, but saw his header rebound off the bar.
Northern Ireland remain without a point in their Nations League Group B3, with Bosnia leading the way on six points, and Austria on three.
Michael O'Neill's side are in danger of relegation to Group C, and head to Sarajevo on Monday before welcoming Austria to Belfast in November.
Northern Ireland have now won just two of their last 10 matches in all competitions.