Months after the coronavirus pandemic shut down American sports, the games are returning. For now, at least. Baseball and women's basketball have begun, hockey and basketball will return this week and football's season is just over a month away. Their restarts have broad similarities. All of the professional leagues decided to sharply restrict or outright ban fans from attending, focusing instead on the television audience at home. They also will all be repeatedly testing players and staff for infection throughout the season. They most sharply diverge in where the games will be held. Generally, sports with smaller roster sizes (NBA, NHL) are playing in "bubbles," isolated from the outside community, while sports with larger rosters (NFL, MLB) are playing at their regular stadiums and traveling between cities.