Earlier in the day, Russia was banned from defending its Davis Cup and Billie Jean King Cup titles but its players will still be allowed to compete at the Grand Slams and in regular tour events.
Denied entry into a restaurant on the basis of his skin colour recently, former Grand Prix driver-turned TV expert Karun Chandhok says more awareness needs to be created against racism through Formula 1 though it has already taken "impressive" steps to address the issue.
Klitschko and his brother Vitali, also a former world heavyweight champion and now the mayor of Kyiv, have both taken up arms against invading Russian forces.