Both the Baltimore Ravens and the Kansas City Chiefs are fighting to avoid a 1-3 start to the season. As part of their efforts, the Ravens have announced roster changes that could prove decisive in this crucial face-off.

As the NBA playoffs begin, time and money are running out for this version of the Boston Celtics. Their title window remains fully open—but wide-open windows can close in a snap, making this postseason a critical juncture for the team.