'Unnecessary', Thiem fires back at Kyrgios in Adria Tour spat

World number three Dominic Thiem said on Monday tennis players "must learn" from the ill-fated Adria Tour and described Nick Kyrgios' criticism of those who took part as "unnecessary". Thiem played in the Belgrade leg of last month's ill-fated tournament organised by world number one Novak Djokovic. "We have to learn from the mistakes and be careful nowadays with this pandemic