On Monday, the Boston Celtics defeated the Chicago Bulls 134-99 at TD Garden.

On Friday, the C's toppled the Bulls again, but this time it was in the first game of the NBA Cup, also at TD Garden.

Boston won 125-111 to to move 4-1 on the young season. Chicago is now 1-5.

Here's what you need to know.

The Celtics are in Eastern Conference Group C with the Bulls, Washington Wizards, Atlanta Hawks and Charlotte Hornets. Boston will play one game against each of those teams in Group Play, which is played all throughout October and November.

The winner of the Group Play stage advances to the elimination round, which begins in early December. The championship is played on Dec. 11. This is the fourth year of the NBA Cup and the New York Knicks are the defending champions.

--Coming off the bench, Payton Pritchard led the way with 30 points for Boston in 35 minutes. He was 9-of-17 from the floor and 9-of-9 at the foul line. He added three rebounds and three assists.

--Jayson Tatum had 26 points on 9-of-20 shooting. Boston had five players in double-figures, as Paul George (18), Neemias Queta (13) and Mitchell Robinson (11) also hit the mark.

--The Celtics were just 10-of-32 from 3-point range, but they were 31-of-40 at the foul line.

--Boston was out-rebounded by 10, which continues to be an issue in the early going

--On the other side, Chicago also had five players in double-figures. Rookie Caleb Wilson led the way with 23 points in 31 minutes.

The Celtics will play the Hornets on Nov. 6, the Wizards on Nov. 24 and the Hawks on Nov. 27. The NBA Cup schedule is played within the confines of the regular schedule as well.

The Celtics won't take the floor again until Sunday, when they'll take on the Orlando Magic in Orlando. The Magic are 2-3 in the early going and are playing without top player Paolo Banchero, who is out with an ankle injury. Jalen Suggs is also out, however, Orlando did find a way to beat the Toronto Raptors on Friday.

Franz Wagner leads the way with 19.5 points while Wendell Carter averages nine rebounds a game.

Orlando is 0-2 at home, which the Celtics will try to make 0-3.