Harbhajan said he finds it difficult to understand why the 33-year-old has not been given a chance in the three-match ODI series against Australia.
Harbhajan observed the Indian players become 'too tight' in high-pressure games and advised them not to worry about the results.
'Mahendra Singh Dhoni is only one. There cannot be a bigger cricketer than him in India,' said Harbhajan Singh.
Venkatesh Prasad has constantly criticised Rahul for his poor run of form which led to a war of words with Aakash Chopra, who tried to defend the right-hander from the former pacer's criticism.
Harbhajan's reaction came at a time when former Indian cricketers Prasad and Aakash Chopra are engaged in a Twitter war over Rahul's place in the team.
Harbhajan joined Sreesanth in a video chat with cricket presenter Vikram Sathaye on Glance LIVE Fest, and revealed how "embarrassed" he felt about the incident.
Sehwag's inclusion in the Test team for the 2007-08 Australia tour for the Border-Gavaskar Trophy surprised many.
The two were involved in the Slapgate incident in the first-ever IPL in 2008.
Bedi, Prasanna, Chandra and Venkat were better performers with the ball on pitches outside India than the likes of Ashwin and Harbhajan.
The 'Turbanator' expects that he can get a few early wickets and make it a different ball-game.