The Boston Celtics are currently the second best team in the Eastern Conference. It's clear now that the Celtics are gearing up for the postseason to pursue their 18th NBA championship. Though, contending for a championship will be a difficult task for the Celtics if they can't stay healthy.

In fact, if the core players for the Celtics can't remain healthy, other teams will take advantage. Jaylen Brown, one of the Celtics' best players this year recently went down after a nasty head injury. It's not clear when Brown will return, but the Celtics could be without him for a while. Actually, Celtics head coach Brad Stevens announced that Brown will sit out Boston's upcoming road trip, per Gate House Media's Scott Souza.

Jaylen Brown (concussion) will not travel on upcoming road trip and there is slight chance Marcus Smart could be back sooner, but most likely later, if at all. Smart will take few days & make decision next week. So there's all that.

Brown is having a career year for the Celtics this season. He's averaging 14.1 points, 5.2 rebounds, and is shooting 46 percent from the field and 37 percent from deep. The Celtics will certainly miss his production, but Stevens did note that there is a high chance that Brown could be back before Marcus Smart, who is out indefinitely with a hand injury.

Nonetheless, the Celtics are beginning to accumulate injuries at the wrong time. After rising to the top of the Eastern Conference, it would be disappointing if injuries derail an optimistic season for the Celtics, who are trying to end the Cavaliers' reign in the East and win their first title in 10 years.