Move your cursor/pointer to hover over the logo in the top left corner or tap once on the logo. Select Manage / Load from under Tournaments.
Click/tap on the tournament's name link.
Click/tap on the Delete button.
Confirm your intention to permanently delete the tournament by clicking or tapping the button labeled, "YES, Delete".
Delete multiple tournaments
Move your cursor/pointer to hover over over the logo in the top left corner or tap once on the logo.
Select Manage / Load from under Tournaments.
Put check marks in the box to the left of each tournament that you want to delete. A red "X" with a number beside it will appear next to the plus symbol - - at the top left. The number next to the red "X" is the number of tournaments that you have checked for deletion. The very top check box will check all or uncheck all tournaments. Verify that you have the correct tournaments selected for deletion and then click/tap on the red "X".
Confirm that you want to delete these multiple tournaments by typing "DELETE SELECTED TOURNAMENTS" into the white box and then click/tapping on the Delete button.
The selected tournaments have been permanently deleted.