There is no disputing the outcome this time.
Demetrious Johnson believed he had earned a spot in the flyweight tournament final when his hand was raised after the judges' scores were announced.
But after the fighters returned to their respective locker rooms, they learned a scoring mishap occurred and the result had been changed to a draw.
If the error had been caught sooner, Johnson and McCall would have participated in a fourth round.
Disappointed, Johnson was determined to leave no doubt in the rematch Friday night in Sunrise, Fla.
Using superior speed to control the first and third rounds, Johnson landed takedowns, strikes and avoided McCalls hard punches to come away with a unanimous decision.
Two judges scored the fight 29-28, while the third had it 30-27. ESPN.com had Johnson winning 29-28.
"He's a tough fighter," Johnson said of McCall. "I felt good. This time I went back to old school. I let my mind go free."
Johnson (15-2-1) will face Joseph Benavidez for the UFC flyweight title on a date to be determined.
Whenever he got a takedown, McCall was unable to keep Johnson there. He never fully adjusted to Johnson's speed.
McCall even tasted the canvas briefly in the first round after getting hit with a straight right hand from Johnson.
"I'm really disappointed in myself," said McCall, who fell to 11-3-1. "I was down [on the scorecards]; that's what I figured."
Silva secures win with rear-naked choke
Maybe there is something about the Octagon that just doesn't sit well with welterweight Erick Silva.
In his three UFC appearances, Silva has yet to visit the second round.
Charlie Brenneman was hoping to be the first fighter to take Silva into deep waters. But he was not able to accomplish his goal as Silva submitted him at 4:33 of the opening round.
After pressuring Silva for much of the round, Brenneman got caught in a rear-naked choke and was forced to tap.
"Thanks to UFC for putting me in the co-main event," Silva said after improving to 14-2 with one no contest. "This is big; this is big for [me]."
Brenneman drops to 15-3.
Pyle knocks out Neer
For the second fight in a row, experienced grappler Mike Pyle has turned to striking to earn a win.
Pyle landed a hard right hook at 4:46 of the first round to knock out Josh Neer in a welterweight battle.
The fighters traded strikes for most of the round, with Pyle getting the better of the exchanges early on. Pyle was able to get a takedown and land hard punches.
But once Neer got to his feet, he landed hard strikes that put Pyle (23-8-1) in defensive mode. Neer landed punches to both the body and head against the cage.
Pyle, however, found an opening and delivered a right that caught Neer flush on the jaw and sent him to the canvas.
"The plan was not to take that abuse," said Pyle, who is a former WEC 170-pound champion. "It's his style to be aggressive and be in your face. He caught me with a couple of good ones and I had enough."
Neer falls to 33-11-1. His win streak ends at six.
Wineland KOs Jorgensen for first UFC win
Since entering UFC competition, bantamweight Eddie Wineland has shown little resemblance to the fighter who once wore WEC 135-pound gold.
Wineland had lost each of his first two UFC bouts, but he is winless in the promotion no more after registering a second-round KO of Scott Jorgensen.
A stiff left jab in the first round floored Jorgensen, but it was a hard right that put Jorgensen to sleep at 4:10 of Round 2.
"This whole camp we've been working on the 1-3-2, thanks to [former top welterweight contender] Dan Hardy and his nasty 1-3-2," Winland said after improving to 19-8-1. "We've been working real hard, and I heard my corner hell 1-3-2, and it was bang, bang, bang, goodnight."
Jorgensen falls to 13-6. He has dropped two in a row.