5 Shoaib Akhtar
Shoaib Akhtar was one of the most fearsome bowlers in international cricket of his era. He troubled many great batters with his searing pace during his peak. Despite looking like a well-built fast bowler, Akhtar was flat-footed, which made running difficult. He further had hyperextension in his joints causing the filling of fluids in his knees, which further led to swelling and excruciating pain. Despite his troubles, Akhtar played for almost a decade picking up 400 wickets for his country.