I think the key words is “training class” and maybe joining those tournaments or competitions can claim it. Entrance and court fees sure can claim it too.
The rest is still gray area, need more info to check claimable or not.

https://says.com/my/sports/103-types-of-spo...1000-tax-relief

For their fees to qualify for the tax relief, training providers must be from associations, sports clubs, or companies registered with the Sports Commissioner or incorporated under the Companies Act
"The public need to check whether the coaches or the training they undertake are registered properly. They cannot claim the tax relief if they train under or are coached by unregistered coaches or entities," said Yeoh.