In late July of 2019, Marjanovic signed a contract with the Mavericks. He made his team debut Nov. 1 against the Lakers, posting four points, seven rebounds and one assist in 11 minutes. Two days later, in a victory over the Cavaliers, the big man posted his first double-digit scoring performance of the season, recording 12 points in addition to eight rebounds in 15 minutes. Marjanovic recorded his first of six double-doubles Dec. 7 in a win over the Pelicans, recording 15 points, 16 boards, two assists and two blocks in 23 minutes. During the Mavericks' final game before the hiatus, Marjanovic posted a career-high 31 points in a 16-point win over the Nuggets on Mar. 11, also contributing 17 rebounds, two steals and one assist in 31 minutes. During the NBA bubble in Orlando, Marjanovic collected a career-high 20 rebounds on Aug. 13 against the Suns. In that contest, he also managed 18 points and three assists in 29 minutes. During the course of the season, the center recorded a season-high two blocks on three occasions -- Dec. 7 against the Pelicans, Jan. 21 against the Clippers and Aug. 10 against the Jazz. Overall, during the regular season, Marjanovic averaged 6.6 points and 4.5 rebounds in 9.6 minutes across 44 appearances. He appeared in all six Mavericks postseason games against the Clippers, averaging 6.8 points and 5.8 rebounds in 13.7 minutes. Marjanovic's best playoff effort was in a Game 2 victory, where he recorded 13 points, nine rebounds and one assist in 10 minutes.

Marjanovic began the 2018-19 season with the Clippers, but for the second consecutive season, he found himself on the move ahead of the trade deadline. Dealt to the 76ers on Feb. 6, he went on to post some of the best stats of his career. Marjanovic had played in 36 games (nine starts) for the Clippers, averaging 6.7 points, 4.2 rebounds and 0.5 blocks despite averaging just 10.4 minutes per game. Over the course of his 22 games with Philadelphia, the fourth-year big man saw his playing time climb to 13.9 minutes per game. He took full advantage, averaging 8.2 points, 5.1 rebounds and 0.5 blocks after the trade. Marjanovic also set a new career high with a a remarkable 61.5 field-goal percentage for the season. All told, he scored in double digits 24 times, a career high, including six double-doubles. His biggest game of the year came in a Sixers uniform on Feb. 21, when he tied his season highs with 19 points and 12 boards against the Heat; he'd scored 19 points and gathered 12 boards in two separate games for the Clippers. The Serbian center also attempted the first 3-pointers of his career, making 4-of-10 shots from long range, with all his makes coming after the trade. He went on to appear in 11 of 12 playoff games for the 76ers, scoring in double digits off the bench in the first three games of their first-round win over Brooklyn. On the whole, he averaged 5.8 points and 3.3 rebounds in just 9.5 minutes per game during the playoffs.

Marjanovic began the 2017-18 campaign with the Pistons, appearing in 19 games (one start) before being shipped to the Clippers in the Blake Griffin deal at the trade deadline. He went on to play in another 20 games for Los Angeles, all off the bench. Marjanovic posted his typical high-efficiency, limited-minutes line in both uniforms, compiling composite averages of 6.0 points (a career high) and 3.7 rebounds despite averaging a mere 8.6 minutes per game. He posted nine games with 10 or more points, peaking with 18 points alongside six boards, two steals and a block for the Clippers in just 15:09 against Denver on Feb. 27. Marjanovic double-doubled Apr. 11 against the crosstown-rival Lakers, netting 12 points and 10 boards in just 12:42. A superbly reliable short-range shooter, the towering Serbian posted a 53.4 field-goal percentage while shooting 79.4 percent from the line. He shot particularly well following the trade, putting up a 55.1 percent mark as a Clipper.

Marjanovic inked a three-year deal with the Pistons ahead of the 2016-17 season. He went on to play in 35 games off the bench for Detroit, again serving as a per-minute statistical monster in extremely limited playing time. Marjanovic averaged only 8.4 minutes per game, yet he managed to put up averages of 5.5 points and 3.7 rebounds in that time. Those per-36-minute numbers were even more incredible than his rookie year -- 23.5 points and 16.0 rebounds. The 7-foot-4 Serbian also shot a remarkable 81.0 percent from the free-throw line. On the few occasions when he received significant minutes, Marjanovic racked up stats. On Jan. 5, he picked up a career-high 19 rebounds along with 15 points in just over 22 minutes for the first of his five double-doubles on the year. On Mar. 24, he scored another 15 points in only 12 minutes on the court. But his biggest game came Apr. 7 against Houston, when he took advantage of playing 27:33 to post a career-high 27 points and 12 rebounds.

Following several seasons of stardom in his native Serbia, Marjanovic signed a one-year, $1.2 million contract with the Spurs ahead of the 2015-16 campaign. He proceeded to appear in 54 games for San Antonio, starting four times. The 27-year-old rookie averaged 5.5 points, 3.6 rebounds and 0.4 blocks per game despite playing only 9.4 minutes per contest. On a per-36-minute basis, those are eye-popping numbers -- 21.0 points, 13.7 rebounds and 1.6 blocks. He also appeared in three games for the D League's Austin Spurs, averaging 23.7 points, 12.3 rebounds and 1.3 blocks. Indeed, Marjanovic showed that he could rack up stats at any level when given the opportunity. On Mar. 23, in just 13:33 on the court, he scored 19 points on 9-of-12 shooting against the Heat. Incredibly, Marjanovic recorded three double-doubles off the bench, and he didn't even clear 17 minutes in two of those games. But his biggest performance came in a rare start on the last game of the season, when he racked up 22 points, 12 boards and two blocks across 37 minutes against Dallas. Marjanovic appeared in seven of the Spurs' 10 playoff contests, averaging 3.4 points and 2.0 rebounds despite playing just 6.0 minutes per game.