Snooker player Jack Lisowski has been blocked from showing his support for Ukraine at the World Championships.
Lisowski, 30, is preparing to face Australian Neil Robertson at The Crucible on Saturday. His clash with the third seed is gearing up to be one of the ties of the second round.
The world No 14 opened up his tournament with a win over Welshman Matthew Stevens. In a nail-biting match against the former finalist, the English player came through 10-8 to progress past round one in Sheffield for just the third time in his career.