The doosra is bowled by an off spinner and is a ball that initially
seems to look like an off spinner when it’s bowled but then moves
unexpectedly in the opposite direction after it pitches. The doosra has
been pioneered by the Sri Lanka great Muttiah Muralitharan and is very
difficult to bowl, Muralitharan reputedly practiced the delivery for 2-3
years in the nets and practice before using it in first class cricket…I
can’t bowl it so I’m not going to go into it!