Aggression's fine, we don't want robots says Aussie Lee

Former Australia fast bowler Brett Lee says emotion and aggression are part of the game and doesn't want to see robots on the field, but he warned against behaviour "crossing the line".

The ongoing Australia tour of South Africa has been marred by on-field altercations with South African speedster Kagiso Rabada appealing against a two-Test ban for a shoulder barge on Aussie skipper Steve Smith in the second Test.

The 41-year-old Lee, a fearsome fast bowler during a sparkling career for Australia from 1999 to 2012, told AFP that controlled aggression is good for the sport.

"The thing that I will say about that, in all honesty, is we don't want robots on the field," he told AFP ahead of the T20 tri-series final between India and Bangladesh in Colombo on Sunday.

"Of course, there is a line that the players should not cross," Lee added, without offering any judgement on the incident involving Rabada, whose appeal is due to be heard by the International Cricket Council later on Monday.

"You don't racially vilify someone. You don't use excessive swearing or stuff that can upset children who are listening in. Other than that you've got to play hard cricket.

"Now I am not saying I agree with what happened and I am not saying that I don't agree with what happened, but what I can say is that we don't want to get into a stage where players can't even look at a batsman, batsman can't even look at a bowler without getting into trouble."
- 'Bowl more yorkers' -
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"A yorker in Test, one-day or T20 cricket can still take wickets and for some reasons bowlers now, in particular, fast bowlers, are hitting a length at the end. I don't necessarily agree that's the best tactic."