Kasun Rajitha will not be available for the second Test against Pakistan in Karachi after sustaining a hamstring strain.
The 26-year-old pacer could deliver only six overs during Pakistan's sole innings in the rain-affected Rawalpindi Test following which he was forced to withdraw from the cricket action.
Rajitha, who accounted for the first of the two Pakistan wickets to fall on the final day, was then confirmed to be suffering from a hamstring injury.
The selectors are unlikely to announce a replacement for the right-arm quick with the fast bowling duties expected to be performed by Vishwa Fernando and Lahiru Kumara.
Uncapped Asitha Fernando, drafted into the squad following Suranga Lakmal's unfortunate bout of dengue fever, could possibly be picked as the third pacer in the playing XI for the next game.
Sri Lanka could consider the possibility of adding another spinner in the line-up given the traditionally slow surface in National Stadium.
They boast the presence of slow bowlers Lasith Embuldeniya and Lakshan Sandakan in the squad, alongside Dilruwan Perera who played the first match.
The Karachi Test will commence on Thursday with both teams vying for a win to claim the series.