The undefeated Cleveland Cavaliers face the defending NBA champion Boston Celtics in a massive Emirates NBA Cup matchup today. This game is available to watch on multiple streaming services for free.

NBA insiders answer one big question surrounding the league's top contenders including what's at stake for high-profile teams.

The most anticipated matchup in the NBA on Tuesday features the 15-0 Cleveland Cavaliers taking on the defending NBA champion Boston Celtics in an NBA Cup Group

Cleveland, which rested Donovan Mitchell on Sunday, leads the NBA in scoring at 123.7 points pergame via the league's top field goal and 3-point percentages, plus its best point differential.

To listen to Tuesday's Celtics game on the radio, tune into 98.5 FM The Sports Hub at the time of tip-off, as 98.5 is the flagship station of the Boston franchise, according to their website. "Occasionally when scheduling conflicts arise, select games can be heard live on ROCK 92.9," the Sports Hub website said.

With Sunday's 128-114 win over the Charlotte Hornets, the Cleveland Cavaliers improved to 15-0, tying for the second-best start in NBA history. The 1948-49 Washington Capitols and, more recently, the 1993-94 Houston Rockets also started their respective seasons with 15 straight wins.

"It’s looked really good to this point but we’re excited to try to put a loss in their loss column.” The post What the Celtics are saying ahead of showdown with undefeated Cavs appeared first on Boston.

The Cleveland Cavaliers are taking their 15-0 record on the road to TD Garden to play the defending NBA Champion Boston Celtics on Tuesday, looking to make it 16 straight to open the season. The rematch of last year's Eastern Conference Semifinals isn't just a normal regular season game.