Australia’s easing of COVID-19 restrictions last month paved the way for unvaccinated American swimmer Michael Andrew to compete at the 2022 Duel in the Pool, which begins Friday morning (Thursday night in the U.S.) in Sydney. Earlier this year in January, then-top-ranked tennis star Novak Djokovic was deported from Australia after landing in the country for the 2022 Australian Open. The Serbian’s visa was voided due to his vaccination status. But the Australian government recently changed its policy in July, no longer requiring proof of COVID-19 vaccination or proof of a negative test to enter the country. “The Australian government...