Two new esports championships will get underway in March and May for Tom Clancy's Rainbow Six Siege and Counter-Strike: Global Offensive, organizers have announced.

The first season of the Rainbow Six Pro League gets underway at the Intel Extreme Masters in Poland on March 4, offering a prize pool of $100,000, Ubisoft said. The series will be contested on Xbox One and Windows PC, concluding with $50,000 grand finals in both divisions matching teams from North America and Europe.

The Rainbow Six Pro League is a production of Ubisoft and the ESL, and will be viewable on Rainbow Six's Twitch steam or YouTube page. Tom Clancy's Rainbow Six Siege launched on Dec. 1.

The second announcement comes from the newly constituted E-League. The E-League will stage a 10-week series featuring Counter-Strike: Global Offensive beginning May 24, with Friday group play being televised on TBS from the network's Atlanta studios. Matches will also be live streamed elsewhere.

Group play will last until July 1, followed by a last chance qualifying round on July 12 to set the field for a three round knockout stage. The global championship will be Saturday, July 30 at 4 p.m. and also televised on TBS.

E-League is a partnership between Turner Entertainment and IMG/WME, the global sports, events and talent management company.