Nick Kyrgios racism claim will be investigated by Stuttgart Open organisers.
Kyrgios racism claims surfaced during the semi-final match against Andy Murray.
Kyrgios was penalised a point and then a game for unsportsmanlike conduct early in the second set, smashing a racquet before an angry exchange with a group in the crowd.
“When is this going to stop? Dealing with racist slurs from the crowd?” Kyrgios wrote on Instagram.
“I understand that my behaviour isn’t the best all the time, but ‘you little black sheep’ ‘shut up and play’ – little comments like this are not acceptable.”
“When I retaliate to the crowd I get penalised. This is messed up.”
A statement from the organisers read: “We stand for creating an inclusive environment for all.
“Discrimination of any kind is not tolerated. These fundamental values are as important as values like fairness, tolerance and team spirit to us.
“Thus no discriminating actions by the spectators are accepted.
“We have expressed our regret towards Nick Kyrgios and his team and assured that any kind of discrimination is unacceptable.
“The incident is currently under investigation.”