In an electrifying battle at Miami’s Kaseya Center, Butler all but single-handedly led Miami to a 119-114 win that leaves the Bucks 3-1 down in the best-of-seven Eastern Conference first-round series, AFP reported.
In the Western Conference, the second-seeded Grizzlies are also staring down the barrel of an early playoff exit after the Lakers claimed a 117-111 victory to take a 3-1 series lead.
James finished with 22 points, 20 rebounds and seven assists and grabbed a game-tying driving layup with 0.8 seconds remaining in the fourth quarter to force overtime.
James then marshalled the Lakers superbly in overtime, scoring four points to put the Lakers in sight of the conference semi-finals.
But the performance of the day came in Miami, where Butler’s 56-point haul was the joint fourth-highest individual scoring total in an NBA playoff game ever.
Only Michael Jordan (63 points), Elgin Baylor (61) and Donovan Mitchell (57) have scored more in a postseason game.
Milwaukee, who welcomed Giannis Antetokounmpo back into their lineup after a two-game injury absence, had looked to be cruising towards victory after leading from the opening seconds and keeping Miami at arm’s length throughout.
Milwaukee led by 14 points early in the fourth quarter and seemed to be poised to square the series at two games apiece after a ruthless shooting performance from Brook Lopez, with Antetokounmpo providing scoring support.
But Butler led an astonishing late 13-0 run to transform the contest and with the crowd roaring him on, scored 21 points in the fourth quarter to leave the Bucks shellshocked in defeat.
Butler said his solo masterpiece was the result of a “complete team effort.”
No other Miami player broke 20 points, with Bam Adebayo the next highest Miami scorer with 15 points. Only two other Miami players cracked double figures.
Lopez finished with 36 points and 11 rebounds while Antetokounmpo made a triple double on his return with 26 points, 10 rebounds and 13 assists.
In Los Angeles, the Lakers also left it late before subduing a resurgent Grizzlies in overtime.
Memphis looked well-placed to level the series after opening up a seven-point lead with just over five minutes remaining in the fourth quarter.
But the Lakers’ D’Angelo Russell reeled off three straight three-pointers to turn the game around and give the hosts a 99-97 lead.
A frantic final few minutes saw Memphis take a 104-102 lead with just seconds left on the clock after a sensational behind-the-back pass from Ja Morant set up Desmond Bane for a running layup.
But James conjured his game-tying drive to force overtime and the Lakers tightened up defensively to close out the win.
Lakers coach Darvin Ham reserved special praise for the leadership of the 38-year-old James down the stretch.
“All of his travels, all of the phenomenal things he’s accomplished, he still has that passion, that grit to be on top,” Ham said. “And that’s what you saw... that’s who he’s been his entire career.”
Bane led the Memphis scoring with 36 points while Morant finished with 22.