Footie club West Ham has been chosen to move into the Olympic Stadium in east London after the 2012 Games are over.
Olympic officials announced on Friday that they'd picked the Hammers over a rival bid from Tottenham Hotspur.
Spurs' plans caused a stir because they involved knocking down the stadium and rebuilding a football-only venue. But West Ham will keep the athletics track.
The decision will now go to the government and London Mayor Boris Johnson before becoming final.
Tottenham had proposed to revamp Crystal Palace in south London as an athletics venue instead.
But London 2012 chairman Sebastian Coe has been clear that athletics should stay at the east London venue, as part of the Olympic legacy.