Coming into this NBA season, a big question for the Boston Celtics was how would Kemba Walker fare as Kyrie Irving’s replacement at point guard. Not only has Walker answered the call, his run as the floor general has been more successful than Irving’s. Along with Walker’s exceptional play comes the improvement of the team’s two young stars Jayson Tatum and Jaylen Brown, who are both averaging more than 20 points per game this season. Their production is just as much the engine behind the machine as Walker is. SI’s Robin Lundberg breaks down the Celtics’ decisive victory over the Los Angeles Lakers on Monday night and why Walker, Tatum and Brown are the reason behind their lopsided 139-107 victory.