Stub hub already have tickets before new presale begains

It's 9 hours before the added 3rd show Presale for The Tragically Hip in Toronto and Stub Hub is already show they have 20 tickets ready for sale on their site. What is this how can they Have Tickets even before the presale? Ticketmaster show they still haven't listen even to what been written in the press or from disappointed fans. http://www.stubhub.com/the-tragically-hip-tickets-the-tragically-hip-toronto-air-canada-centre-8-14-2016/event/9593879/?mbox=1&abbyo=false&rS=6&qtyq=false&sliderpos=true