Re: Off spin
Might be what it is. All seems a bit strange to me.
According to EA Sports' Cricket 07 computer game, the teesra is an off-spinner's delivery which starts off like a normal off break ball but, after release, drifts slowly in to the batsman before pitching and turning at an angle while picking up speed and bouncing higher than a normal delivery. This is particularly useful if bowled just away from a right handed batsman's leg stump, as he would often be unprepared and may play the shot too late.
Might be what it is. All seems a bit strange to me.