Triplication of records

I have a problem, I made a insert of a tournment on listfortress, and my friend did too, but I've looked, and there is another entry that we didn't do. 
Here are the links:
https://listfortress.com/tournaments/4362
https://listfortress.com/tournaments/4361
https://listfortress.com/tournaments/4345

I've searched and did not find any way to delete the entryes