Celtics' Walker, Williams doubtful for Game 5 vs. Nets

The Boston Celtics have listed starting point guard Kemba Walker and key reserve big man Robert Williams as doubtful for their pivotal Game 5 matchup against the Brooklyn Nets on Tuesday.

The pair previously missed Sunday's 141-126 loss in Boston - Walker due to a bone bruise in his left knee and Williams because of a left ankle sprain.

The Celtics turned to second-year guard Romeo Langford as a backcourt starter alongside Marcus Smart in Game 4, while Grant Williams and Jabari Parker saw an uptick in playing time off the bench with Williams out of commission.

With a 3-1 series lead, the Nets are now one win away from advancing to the second round of the postseason for the first time since 2014.