Celtics guard Marcus Smart (36) celebrates after the Celtics beat the Cavaliers on Sunday. (Ken Blaze/USA Today Sports)

Breaking down the 2017-18 Celtics roster

Olivia Healy
July 13, 2017 - 3:28 pm

The Celtics are returning a majority of their roster back for the 2017-18 season, but there have been free agents signings, trades and draft picks that have shaped the roster with long defenders and efficient scorers. Despite all the additions, Avery Bradley, Kelly Olynyk, Jonas Jerebko and James Young have all parted ways with the Celtics organization. 

#4 Isaiah Thomas

The 5-foot 9-inch point guard and last pick in the 2011 NBA draft averaged 28.9 points, 5.9 assists and 2.7 rebounds during the 2016-17 season. He shot the ball 37.9 percent from beyond the arc and 46.3 percent from the field. He has appeared in two All-Star games, was named to the 2016-17 All-NBA second team and finished fifth in the league in three-point field goals and finished third in the league with the number of points scored in the 2016-17 season with 2,199 points. 

#7 Jaylen Brown 

The No. 3 pick in the 2016 NBA draft is averaging 10.3 points and 5.3 rebounds in summer league play. Brown came into his own at the end of the postseason in the 2016-17 season in which he averaged 6.6 points and 2.8 rebounds. Brown has the length and ability to guard bigger opponents and has a skill to become a dominant scorer from anywhere on the court. 

#9 Demetrius Jackson

The 6-foot 1-inch guard from Notre Dame was the No. 45 pick in the 2016 NBA Draft and spent the 2016-17 season with the Maine Red Claws. He averaged 14.8 points, dished out six assists and pulled down 5.1 rebounds. In the Las Vegas summer league games, Jackson has averaged 9.3 points and four assists. 

#11 Jayson Tatum

The No. 3 overall pick of the 2017 NBA draft has shown great promise and NBA potential in his first few games as a Celtic in the summer league. The former Duke player was named a third-team All-ACC selection and a member of the ACC All-Freshman Team after averaging 16.8 points, 7.3 rebounds and 2.1 assists. Throughout summer league play, Tatum is averaging 17.7 points, eight rebounds while shooting the ball 42.2 percent from the field. 

#12 Terry Rozier 

Celtics.com named Rozier the most improved player during his rookie to sophomore year transition. The former Louisville guard was Boston's No. 16 overall pick in the 2015 NBA draft. In the 2016-17 season he averaged 5.5 points and 3.1 rebounds. Rozier wasn't the most reliable player on the court, but when things weren't going the Celtics' way, he was always the player to come in and take care of the ball and add pressure defense along the perimeter.

#13 Marcus Morris 

The 6-foot 9-inch power forward was traded to the Celtics after playing with the Pistons for the last two seasons in exchange for Avery Bradley. In the 2016-17 season he averaged 14 points, 4.6 rebounds and two assists. He gave the Pistons 32.5 minutes per game and shot the ball 41.8 percent from the field and 33.1 percent from three-point range. 

#20 Gordon Hayward

As a 6-foot 8-inch small forward, Hayward averaged 21.9 points, 5.4 rebound and 3.5 assists during the 2016-17 season with the Jazz while shooting the ball 47.1 percent from the field and 39.8 percent from three-point range. After signing a four-year, $128 million contract with the Celtics, Hayward will be reunited with his former college coach, Brad Stevens. 

#25 Jabari Bird

The No. 56 overall pick in the 2017 NBA Draft, Jabari Bird, is averaging nine points and 4.7 rebounds while shooting 60 percent from the field in the NBA summer league. The former Cal shooting guard finished fifth in the schools history for career three-pointers and is 25th all-time in career points. 

#30 Gerald Green 

Gerald Green was drafted by the Celtics in 2005 as the No. 18 overall pick. During the 2016-17 season he averaged 5.6 points while shooting the ball 40.9 percent from the field and 35.1 percent from deep range during the regular season. Green provided a spark for the Celtics during the postseason match up with the Bulls where he earned his first playoff start, but at this point in time he remains a free agent.

#36 Marcus Smart 

In the 2016-17 season, the 6-foot 4-inch point guard averaged 10.6 points, 4.6 assists and 3.9 rebounds. Smart took over at the point guard position in the postseason when Isaiah Thomas sat out with his hip injury. Smart exploded in Game 3 against the Cavaliers for a team high 27 points and seven rebounds. 

#37 Semi Ojeleye

The No. 37 overall pick in the 2017 NBA draft is averaging 12 points and 4 rebounds while shooting 41.4 percent during the NBA summer league. The 6-foot 7-inch 235-pound 22-year-old transfered from Duke to SMU and averaged 19 points and 6.9 rebounds during the 2016-17 season. He shot the ball 48.7 percent from the field and 42.4 percent from three-point range.

#42 Al Horford

The No. 3 overall pick in the 2007 NBA draft was acquired by the Celtics in 2016 when they signed him to a four-year $113 million contract. In the 2016-17 season Horford averaged 14 points, 6.8 rebound and five assists while shooting 47.3 percent from the field and 35.5 percent from beyond the arc. Horford is the big man that can do it all, whether is be pass, shoot or rebound and he does all of which extremely effective.

#45 Kadeem Allen

As a junior guard coming from Arizona, Kadeem Allen averaged 9.8 points, four rebounds and 2.9 assists last season, as well as averaging 30 minutes a game and shot the ball 45.3 percent from the field and 42.7 percent from behind the arc. He was named to the Pac-12 All-Conference Second Team and All-Defensive Team as he lead the team with 53 steals during the 2016-17 season. The 6-foot 3-inch 195-pound guard came from Hutchinson Community College and was a top junior college prospect. During the NBA summer league, Allen is averaging 2.7 points and two rebounds. 

#54 Ante Zizic 

The No. 23 overall pick in the 2016 NBA draft and 7-foot Croatia native is averaging 7.7 points and eight rebounds a game and shooting 60 percent from the field in the NBA summer league competition. Zizic traveled overseas to play in the 2016-17 season and averaged 15.7 points and 4.7 rebounds on the KK Cibona team out of Croatia. 

#55 Jordan Mickey

As a 6-foot 8-inch 235 power forward, Jordan Mickey averaged 1.5 points, 1.4 rebounds and 5.6 minutes in 25 games the 2016-17 season. Mickey was the No. 33 overall pick in the 2015 NBA draft after leaving LSU where he averaged 12.4 points and 9.9 rebounds during his sophomore campaign. 

#99 Jae Crowder 

Jae Crowder is a 6-foot 6-inch forward and former Marquette player that was drafted by the Cavaliers as the No. 34 overall pick in the 2012 NBA draft. In the 2016-17 season with the Celtics he averaged 13.9 points and 5.8 rebounds. From the field he shot the ball 43.5 percent from the field and 34.6 percent from beyond the arc. 

#99 Daniel Theis 

Daniel Theis and the Celtics have agreed to a two-year deal, according to ESPN's Adrian Wojnarowski. During the 2016-17 season in the Euroleague with Brose Bamberg, he averaged 9.6 points and 4.6 rebounds. 

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