Porter played only nine games this season before undergoing back surgery, and he was originally expected to miss the remainder of the season.
Jayson Tatum had 24 points, Marcus Smart added 22 points, five steals and two crucial free throws, and Boston beat Denver.
The Jazz have won all three meetings with the Nuggets his season, including two on the road, and in this one.
The Clippers won despite managing a meagre 28 points in the lowest-scoring first half in the NBA this season.
Jokic reached 20 points for the seventh straight game as Denver got reinforcements back from health and safety protocols.
Rudy Gay had 18 points and Donovan Mitchell added 17 for the Jazz, who have not lost on the road since a 107-100 setback at Orlando on Nov. 7.
Gilgeous-Alexander had the first triple-double by a Thunder player at home since Russell Westbrook during the 2018-19 season.