Spencer Dinwiddie scored 36 points, a record for the season, in his debut start for Dallas since he was acquired from Washington on February 10. Jalen Brunson scored 23 points, assisted on the winning basket and drove the length of court before Finney-Smith took the lead at 114-111.
The Kings had the chance to tie the game in the final seconds. But Harrison Barnes' 30-footer missed the rim. Justin Holiday converted the miss into a layup that gave the Kings their last points.
Dallas was 19 behind at Golden State on Sunday, but rallied for a 107 to 101 victory. Five consecutive wins for the Mavericks.
De'Aaron Fox scored 44 points to match his career record, while Domantas Sabonis contributed 15 points and 10 rebounds. The Kings ended a five-game trip with 2-3.
Doncic was noted on the injury report with a left toe strain. Jason Kidd didn't give any details about the injury. It was Doncic's first missed game since Jan. 7, and his 16th of this season. Dallas is now 6-10 without Doncic, a four-time All Star at 23 years old.
Kings: Richaun Holmes, who missed five games due to back soreness, has returned to the Kings. Holmes scored six points and grabbed six rebounds in just 16 minutes. ... Guard Jeremy Lamb was left with left hip pain.
Mavericks: Finney Smith scored 17 points and hit 5 of 11 3-pointers. Dinwiddie converted 12 out of 13 free throws. Maxi Kleber, power forward, was injured in his ankle and missed his second consecutive game.
Kings: New York hosts Kings on Monday night.
Mavericks: Utah hosts Mavericks on Monday night.