As the sports world hashes out how to salvage seasons interrupted by a worldwide shutdown caused by the COVID-19 pandemic, brands, broadcasters and venues are exploring ways to offset staggering revenue losses.The prevailing reopening strategy for leagues in the United States and abroad seems to be shortened and delayed seasons to be played in front of empty stands. At the same time, leagues are working with sponsors and other partners to find new promotional opportunities.Playing to empty stadiums will be an odd …