Improve Tournament Sorting

When i do an advanced search for stickers, and press the tournament filter, the 2015 DreamHack Cluj-Napoca tournament comes before 2015 ESL One Cologne tournament. This is in a form or way factually wrong compared to all the other tournaments listed in the advanced search filter, which are cronologically in order. Can this be fixed, as ESL One Cologne came before Cluj-Napoca in 2015.