Nothing can derail an NBA team's playoff hopes like untimely injury.
Of course, there's never exactly a desirable time for a player to get hurt, but at least during the regular season the stakes are significantly lower than they are during a seven-game series.
Not only are injuries more catastrophic to a team's chances once postseason play begins, but even the minor bangs and bruises start wreaking greater havoc. Absences hurt, but if a guy plays through the pain and comes up short, the team still suffers despite his determination.
Even the teams that aren't facing major injuries have reasons to be concerned. Teams need their health now more than ever; the slightest misstep could end their season.