But Golden State star forward Kevin Durant suffered a knee injury that appeared serious and suddenly the Warriors wanted a forward as a precaution. James had a monster game to keep Cleveland in it through, pouring in 51 points to go with eight boards and eight assists.
LeBron James, with his eye still red after getting poked by Draymond Green in Game 1, has 15 points, eight assists and seven rebounds.
Golden State's new-look lineup has made 10 of its first 11 shots and have a 21-17 lead.
Warriors: Thompson played in his franchise-record 100th postseason game.
With the Cavs lacking any clear strength outside of James, Love, and Thompson, Stephen Curry will hurt Cleveland with his speed and skill. The team is officially listing him as questionable for Sunday's game.
Golden State center JaVale McGee kept rolling to the basket, catching a pass and dunking.
Calderon, a three-time Olympic medalist for Spain, is trying to help the Cleveland Cavaliers claim their second title in three seasons and deny his brief-teammate Warriors their third in four years in the fourth consecutive best-of-seven title showdown between the clubs.
His reaction in the final seconds of an overtime loss to Golden State demonstrated the frustration Thompson and all the Cavaliers felt about a game they were close to winning in regulation.
After a first game with some hotly debated calls, the officiating was under great scrutiny on Sunday evening.
"They're damn good with him and they're damn good without him", James said.
David Guthrie, welcome to the NBA Finals.
When an National Basketball Association player commits a big mistake they often make amends.
Guthrie is making his finals debut as a referee Sunday night for Game 2 of the Cleveland-Golden State series.
Smith didn't seem to let the mistake affect his confidence heading into Game 2. Smith may not have realized the game was still tied, and now says that he's not even quite sure anymore what transpired in those few, dramatic moments.