After losing the closely-fought ODI series 2-3 to South Africa, Indian captain Mahendra Singh Dhoni Sunday said it was a "disappointing" performance by the batsmen throughout and called it a "big lesson" before the World Cup.

India lost the fifth and the last ODI by 33 runs, despite Yusuf Pathan smashing 105 off 70 balls as a last ditch effort and bringing India closer to the target of 268 runs.