The 23-year-old pulled up in his follow-through while delivering the fourth ball of his opening over and immediately clutched his left leg before going to ground. After on-field treatment, he was helped off the field. Captain Dasun Shanaka finished the over.
Pathirana is not playing in the ongoing Indian Premier League (IPL) clash against Punjab Kings (PBKS) at Dharamsala on Sunday. He had also missed his side's previous clash, which also happened to be against Punjab at Chennai on May 1.