The Riverside Stadium will stage the Rugby League World Cup in 2021 after it was announced that the Tees Valley's bid to be a host city was a success.
The Riverside becomes one of 21 host venues for the competition, the setting for a 'significant men's group game'.
David Joyes, Chief Financial Officer at MFC, said: "We've all been very hopeful over the past couple of months, but it's great to have that confirmation.
"It's a world-class competition, it's great for the region and it's fantastic for the Riverside Stadium - proving once again it's a world-class venue."
Tees Valley Mayor Ben Houchen added: "A big thank you has to go to Middlesbrough FC.
"It's the first Word Cup event in Middlesbrough since 1966 and for Teesside, it's about showing what this region is all about."
Watch our video from the launch event at the Riverside Stadium this morning in the Tweet above, with photos in the gallery at the top of the page.