1) Ruining the career of Irfan Pathan by making him bowl
slower deliveries and change his bowling action. Remember Pathan's speed and action during the Australia tour
2) Ramesh Powar does not deserve a place in the team. But it was Chappel who suggested that he could bat as well as bowl and hence it cost Venugopal Rao his place.
3) Asking Dravid to open the innings when Sachin was injured(He was a big flop)
4) Ruining the careers of VVS Laxman, Dinesh Karthick, Sanjay Bangar, Balaji, Aakash Nehra, Zaheer Khan ang Ganguly from ODI(Remember Ganguly scored a half-century in his last ODI and has scored 10000+ runs)