0931 GMT February 18, 2018
Cleveland took control of the game in third quarter and led by as many as 11 in the fourth, then saw the Mavericks twice cut the deficit to one point, Associated Press reported.
Dallas could never break through, though, missing three shots that would have given them the lead.
With the American Airlines Center crowd standing for most of the game's final four minutes, Harrison Barnes missed a 3-pointer with 39 seconds left that would have put Dallas up by one.
Korver — who hit three 3s in the quarter — was fouled on the rebound as he crashed to the floor, then made both free throws to put the Cavs up 106-102.
Cleveland made seven of its final eight from the line to clinch the game.
LeBron James, averaging 36 points in the Cavs' first five games in November, had just 19 Saturday, but two came on an emphatic dunk with 1:08 to play that put Cleveland up 104-100. He also had 11 rebounds.
"We're just really resilient," James said. "We relied on our championship habits from our guys on the floor, but also trying to get back to our mental toughness and figuring out how to win."
Barnes finished with a team-leading 23 points and 12 rebounds, and Dennis Smith, Jr. had 21 for Dallas, which is tied with Atlanta for the NBA's worst record at 2-11. Dirk Nowitzki scored 14 for the Mavericks.
"It's never usually what happens in those last few minutes that dictates the game," Barnes said.
"It's what you did earlier. Unfortunately, that deficit we built — we couldn't really get past it."
J.R. Smith's four 3-pointers gave him 1,797 for his career, tying him for 13th place all-time with Nowitzki, who had two 3s of his own in the game.
Los Angeles Lakers rookie Lonzo Ball became the youngest player in NBA history to record a triple-double, achieving the feat against the Milwaukee Bucks on Saturday night at the age of 20 years, 15 days.
James had previously been the youngest to get a triple-double, doing so in the 2004-05 season at 20 years, 20 days.
Ball completed his triple-double when he grabbed his 10th rebound early in the fourth quarter. He also had 13 points and 11 assists at the time.
Ball finished with 19 points, 13 assists and 12 rebounds, and had 3 steals and a career-high-tying 4 blocks. Afterward, Ball said the triple-double didn't mean anything, because the Lakers fell 98-90 for their third straight loss.
"I really don't care," Ball said of his first triple-double.
"We took a loss. It don't really mean nothing."
It's perhaps fitting that Ball collected his first triple-double in his first game against the Bucks, whose coach Jason Kidd ranked third all time in triple-doubles with 107, behind only Oscar Robertson and Magic Johnson. Ball has often been compared to Kidd because of his passing, vision, rebounding ability and triple-double-suited game.