Due to high demand, Saturday's fixture has been made all-ticket for Posh fans.
Peterborough United face league leaders Sheffield United on Saturday at the ABAX Stadium and the Blades are close to selling out their entire allocation of over 4,000.
Pre-game sales in home areas are also encouraging after Saturday's comfortable 3-0 victory at Port Vale and the decision has been made to make the game ALL-TICKET for Posh fans.
The Ticket Office will be open until 7pm on Thursday night to allow supporters to purchase after work hours, but tickets can be purchased 24 hours a day online at www.theposhtickets.com. You can also buy tickets via the Ticketmaster hotline 0844 847 1934*.
*Calls cost 7ppm plus your network access fee.