Dallas Mavericks rookie Cooper Flagg is listed as questionable for Sunday’s game against the Toronto Raptors with a left midfoot sprain as they try to snap a six-game losing streak on the road.

Friday’s 120-100 loss to the Boston Celtics was Dallas’s sixth straight, dropping the Mavericks to 21-42 on the season. The Celtics led by as many as 20 in the second half after Boston outscored Dallas 62-47 over the final two quarters. Jayson Tatum made his season debut after 298 days away with a torn right Achilles tendon, posting a 15-point, 12-rebound double-double in 27 minutes. Klay Thompson led Dallas off the bench with 19 points on 7-for-13 shooting in 18 minutes. The Mavericks shot 38-for-93 from the field as a team.

Cooper Flagg Pushes Through Left Midfoot Sprain in Boston

Flagg acknowledged after Friday’s loss in Boston that the foot gave him trouble throughout the night, including a first-quarter scare that temporarily took him off the floor.

“It was a little awkward,” Flagg said. “It was a little sore, but it was something I could play through. It was a little tender, but nothing I couldn’t deal with.”

Flagg slipped on the foot in the first quarter at TD Garden and was pulled for evaluation at the 4:21 mark. He came up slow and was clearly laboring, checked by a trainer on the sideline before going through stretching and basic movement drills. He then rode the stationary bike near the tunnel before returning to the floor in the second quarter. There was no minute restriction in Boston. He finished with 16 points, eight rebounds and six assists, though he shot just 7-for-23 from the field.

The sprain originally cost Flagg eight games. He returned Thursday in Orlando on the second night of a back-to-back under a 20-to-25-minute restriction, finishing with 18 points, six assists and four blocks in a 115-114 loss. He shot 7-for-22 in that game as well. Over the two games back, he has shot 14-for-45. Flagg said after Friday’s game that his shooting struggles are a rhythm issue, not a health one, and he was not concerned about either.

Both games carried unusual personal weight that may have factored into the calculus of playing through the injury. Orlando was a return to Central Florida, where Flagg spent two years at Montverde Academy and won a national high school championship. Boston was the arena he grew up attending as a kid in Newport, Maine — the closest NBA venue to his hometown and the only arena he really visited as a child. Toronto does not carry that same significance, which makes his questionable designation a more straightforward health decision this time around.

“I’m getting to my spots and taking the shots I want,” Flagg said. “They’re just not falling right now. It’s about getting my rhythm and touch back, and I’m not worried about it.”

Mavericks coach Jason Kidd praised Flagg’s willingness to push through the discomfort in Boston.

“He hurt his foot early but came back and kept competing,” Kidd said. “He’s a tough kid.”

Marvin Bagley III Among Others Listed on Injury Report

Flagg leads the Mavericks in points, rebounds, and assists this season, averaging 20.3 points, 6.5 rebounds, and 4.2 assists. With Kyrie Irving and Dereck Lively II both done for the year, the Mavericks have limited capacity to absorb another significant absence.

Marvin Bagley III has been upgraded to questionable after missing five consecutive games with a neck sprain he sustained Feb. 26 against Sacramento, when he was kicked in the head while getting up from the floor.

After filling in as a starter in Boston, Dwight Powell is listed as probable with right calf tightness. Moussa Cissé, John Poulakidas, and Tyler Smith are all listed as doubtful due to their two-way contract status with the G League.

Dallas Mavericks vs. Toronto Raptors: Matchup Context

Dallas enters Sunday at 21-42, 12th in the Western Conference, and 2-8 over its last 10 games. The Mavericks are also 7-23 on the road. Their opponents have averaged 119.6 points per game over the last 10.

The Raptors are 35-27 and fifth in the Eastern Conference, going 16-16 at home this season. Toronto leads the league with 18.8 fast break points per game, a potential problem for a Dallas defense that has struggled all season. Scottie Barnes is averaging 18.9 points, 8.0 rebounds, and 5.4 assists. Brandon Ingram has been the hotter performer recently, averaging 21.6 points and 4.2 assists over the last 10 games.

Toronto allows 112.0 points per game. Dallas averages 113.3, giving the Mavericks a slight offensive edge on paper — if they are healthy enough to take advantage of it.

The two teams met once earlier this season, with Dallas winning 139-129 on Oct. 26. Flagg scored 22 points in that game.

Tip-off Sunday is set for 5 p.m. CST at Scotiabank Arena.

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