In July of 2019, Parker signed a two-year agreement with Atlanta. Parker was a key piece for the Hawks early in the season, as he averaged nearly 28 minutes per game while helping compensate for the loss of John Collins (suspension). Parker moved into Atlanta's starting five on Nov. 5 and held onto a starting spot through mid-January. In 23 games as a starter, Parker averaged 16.2 points, 6.8 rebounds, 1.9 assists and 1.7 steals in 28.6 minutes. Parker registered his first of two double-doubles on Nov. 10 with 27 points and 11 boards in a loss at Portland. On Nov. 27, Parker double-doubled via a season-high 27 points, a season-high 14 rebounds, five assists, two steals and one block during a loss at Milwaukee. Just before Christmas, Parker suffered a shoulder injury that forced him to miss 24 games. On Feb. 5, while out due to injury, Parker was traded to the Sacramento Kings as part of a package that brought Dewayne Dedmon to Atlanta. Parker made one appearance for Sacramento on Feb. 20 during a home win over the Grizzlies. The former Duke standout generated four points, four rebounds and two assists in nearly 15 minutes of run during the Kings' win. Parker did not see floor time again before the season was suspended on Mar. 11.

Parker signed with the Chicago Bulls last offseason, and the former No. 2 overall pick parlayed increased opportunity with a hot start to the year. Parker averaged 17.4 points, 7.7 rebounds and 2.6 assists during the month of November. He was dealt to the Washington Wizards in early February. Parker peaked for the Wizards during March, averaging 17.5 points, 7.4 rebounds and 2.4 assists in 28.5 minutes per tilt. Parker ended up appearing in 64 games in total, the second-highest total of his five-year NBA career. On the season, Parker still managed 14.5 points, 6.6 rebounds and 2.4 assists per contest. He shot a career-best 55.6 percent on two-point shots. One of his best games of the season occurred on March 27 in a three-point win over the Suns. Parker posted 28 points on 9-of-16 shooting, 15 rebounds and three assists in 32 minutes. He accumulated eight double-doubles on the year. Parker posted at least 20 points on 17 occasions, grabbed at least 10 boards in 10 games, and handed out more than four assists seven times. On defense, he racked up three-plus steals three times, and he recorded at least one block in 25 contests.

Parker's fourth NBA season was cut short, as he only played in 31 games following a lengthy recovery from a torn ACL he suffered in February of 2017. The former No. 2 overall pick made his return on Feb. 2, and the Bucks were careful to ease him back into action. Parker played fewer than 20 minutes in five of his first six games, and he only picked up three starts all season. Despite a career-low 24.0 minutes per game for the year, Parker was still able to contribute offensively, averaging 12.6 points per game on 48.2 percent shooting from the field. The Duke product went off for a season-high 35 points in a loss against Denver on Apr. 1, where he played a season-high 39 minutes. He also experienced two other games scoring in the 20s. Parker added 4.9 rebounds and 1.9 assists per game. He grabbed a season-high 12 rebounds in a win over the Knicks on Apr. 7 and also counted 16 points for one of the three double-doubles he posted during the season. His season high for assists was five, something he did on two different occasions. Defensively, Parker averaged 0.8 steals and 0.3 blocks per game.

Expectations were big for Jabari Parker entering the 2016-17 season, his third in the league. He was limited to just 25 games in his rookie campaign, but appeared in 76 games in 2015-16 and appeared poised for a breakout. Early on, it looked as if Parker was going to deliver. From October through February, Parker registered career-high per-game averages in points (20.1), rebounds (6.2) , made three-pointers (1.3) and assists (2.8). The 6-foot-8 forward also shot an impressive 49.0 percent from the field. On Nov. 10, Parker scored a season-high 33 points, plus grabbed nine boards, in a loss to the Pelicans. On Jan. 27, Parker grabbed a career-best-matching 13 rebounds and added 21 points in a loss at Toronto -- that was one of this two double-doubles during the campaign. Parker was cruising when his left knee suffered yet another big injury Feb. 8 in a home loss to Miami. On the following day, Parker's knee was diagnosed to yet again have a torn ACL. Surgery followed on Feb. 15 and the Bucks announced that Parker would be out for roughly a year. It was a devastating blow for Parker, who missed 57 games his rookie season due to the same injury. The Bucks finished at 42-40 and lost to the Raptors in the first round of the playoffs.

After a rookie season cut short by a torn ACL, the NBA community was very happy to see Jabari Parker play in 76 games (with 72 starts) during his sophomore season in Milwaukee. The knee injury prevented Parker from playing in Summer League or preseason games. The issue also forced Parker to miss the first four games of the season. But, on Nov. 4, the Bucks eased Parker back with 16 minutes of run during a home win over the 76ers. From Nov. 4 to Dec. 4, the Bucks limited Parker's minutes to 23.0 per game, with two games off. On Dec. 5, the second game of a back-to-back, Parker played 36 minutes and produced 17 points, seven boards, two assists, two steals and a block in a win over the Knicks. Parker went on to score in double digits over the next seven games and started to flash the talent that made him the second overall pick in the prior year's draft. On Feb. 20, Parker grabbed a career-high 13 rebounds to go along with 28 points, in a win at Atlanta. On Feb. 29, the 6-foot-8 forward scored a career-high 36 points, to go with five assists, four rebounds and two steals, during a home win over Houston. A healthy Parker appeared in the last 71 games of Milwaukee's season.

Parker was the second overall selection, by Milwaukee, in the 2014 NBA Draft. The Duke product entered the 2014-15 season as a 19-year-old, yet often played like an established veteran. Parker made his NBA debut on Opening Night, Oct. 29th at Charlotte, and promptly received 37 minutes of run. During the close loss, Parker posted eight points, four rebounds, one assist and one steal. Parker started the Bucks' first 25 games and delivered per-game averages of 12.3 points, 5.5 rebounds, 1.7 assists and 1.2 steals per contest. On the second game of the season, Parker registered his first career double-double with 11 points and 10 rebounds in a home win over the 76ers. On Nov. 1, the rookie grabbed a career-high 11 rebounds during a loss at Washington. On Nov. 14, Parker scored a career-high 23 points, to go with seven boards and two steals, during a win over the Nets. Unfortunately, adversity would arise during a Dec. 15 road game at Phoenix. Parker injured his left knee and immediately exited the game. A day later, it was announced Parker had torn the ACL of his left knee and would miss the remainder of the season. Surgery was delayed until early January with a concern that the injury could force Parker to miss games in 2015-16. The Bucks would finish the year at an even 41-41, and without Parker, were eliminated in the first round of the playoffs.