Polls have opened in the second round of Portugal's presidential election, with voters deciding between two candidates. Meanwhile, in the United States, the Cleveland Cavaliers secured a 132-126 win over the Chicago Bulls, thanks in part to James Harden's impressive debut. In mixed martial arts, Andrei Arlovski defeated Ben Rothwell in a bloody heavyweight title fight at Knucklemania 6. In other news, researchers have found that higher earners are driving up home prices, rather than a lack of supply, contributing to the housing affordability crisis. The US economy is also expected to see a double whammy of jobs and inflation data in the coming days. In space news, SpaceX has successfully launched a return to flight Falcon 9 mission following a brief stand down.