Arena Season 9 (Vicious) commenced on 14 December 2010, one week after the release of World of Warcraft: Cataclysm and ended on June 28, 2011, the release of patch 4.2.0. Season 9 is notable for being the first season with rated battlegrounds. It also introduced some new features such as War Games, which are unrated battles set up between players for fun.
Season 9 has two types of sets: Bloodthirsty and Vicious.
- Bloodthirsty Gladiator items are longer available.
- Vicious Gladiator items can no longer be obtained from vendors, but some still drops from Argaloth (10/25 man) in Baradin Hold. These include: Cloak, Feet, Finger, Hands, Legs, Neck, Trinket and Belt.
- Glorious Vicious Gladiator items are longer available.
|Season||Title||Start Date||End Date||Duration||Notes|
|Season 1||January 30, 2007||June 19, 2007||20 Weeks||Introduced with The Burning Crusade
End coincided with Patch 2.1.2
|Season 2||June 20, 2007||November 26, 2007||23 Weeks||EU End Date was November 27, 2007|
|Season 3||November 28, 2007||June 23, 2008||29 Weeks|
|Season 4||June 24, 2008||October 14, 2008||17 Weeks||Last arena season of The Burning Crusade|
|Season 5||December 16, 2008||April 14, 2009||17 Weeks||Gear titles: Savage, Hateful, Deadly|
|Season 6||April 21, 2009||August 25, 2009||18 Weeks||Beginning corresponded with patch 3.1.0|
|Season 7||September 1, 2009||January 19, 2010||20 Weeks||End corresponded with the opening of the Crimson Hall in Icecrown Citadel|
|Season 8||February 2, 2010||October 12, 2010||37 Weeks||Beginning corresponded with patch 3.3.2 and the release of the Frostwing Halls in Icecrown Citadel
End corresponded with patch 4.0.1
||December 14, 2010||June 28, 2011||28 Weeks||Began one week after the Cataclysm
Ended with launch of patch 4.2.0
||July 05, 2011||November 29, 2011||21 Weeks||Began one week after patch 4.2.0
Ended with launch of patch 4.3.0
|Season 11||Hero of the Alliance: Cataclysmic
Hero of the Horde: Cataclysmic
|December 6, 2011||August 28, 2012||38 Weeks||Began one week after patch 4.3.0
Ended with launch of patch 5.0.4
|Season 12||Hero of the Alliance: Malevolent
Hero of the Horde: Malevolent
|October 2, 2012||March 5, 2013||22 Weeks||Began one week after the launch of Mists of Pandaria
Ended with launch of patch 5.2.0
|Season 13||March 12, 2013||TBA||TBA||Began one week after patch 5.2.0|