The letter commended current fast bowler Lungi Ngidi, who last week expressed support for the Black Lives Matter movement.
Euro T20 Slam organisers are looking to stage the inaugural edition of the showpiece event in Ireland later this year.
Australia batsman David Warner joined the game started by the ICC and got New Zealand skipper Kane Williamson as his quarantine partner.
Herschelle Gibbs had been handed a two-Test ban by the ICC for making a racial slur against a section of Pakistani spectators in the first Test played in Centurion.
Australia vs New Zealand: Former South Africa batsman Herschelle Gibbs had a hilarious response when asked about his feelings on Marnus Labuschagne, who was born in South Africa, playing for Australia.
IND vs SA: Herschelle Gibbs questioned the selection of Theunis de Bruyn and Temba Bavuma in the South Africa Test team after dismal performances in the first Test against India
Ramesh Powar's previous stint as coach ended after the Women's World T20 tournament.
Ravichandran Ashwin had earlier reacted badly to Herschelle Gibbs joke about his running.
Ravichandran Ashwin and Herschelle Gibbs were involved in an exchange which eventually turned sour.