In the main event, McGregor (18-2 MMA, 6-0 UFC) scored a second-round TKO of Mendes (17-3 MMA, 8-3 UFC) to become interim UFC featherweight champion.
The total disclosed payroll for the event was $1,952,000.
Official UFC 189 payouts included:
Conor McGregor: $500,000 (no win bonus)
def. Chad Mendes: $500,000 (wasn’t eligible for win bonus)
Champ Robbie Lawler: $300,000 (includes $150,000 win bonus)
def. Rory MacDonald: $59,000
Jeremy Stephens: $72,000 (includes $40,000 win bonus)*
def. Dennis Bermudez: $34,000*
Gunnar Nelson: $58,000 (includes $29,000 win bonus)
def. Brandon Thatch: $22,000
Thomas Almeida: $24,000 (includes $12,000 win bonus)
def. Brad Pickett: $30,000
Matt Brown: $92,000 (includes $46,000 win bonus)
def. Tim Means: $23,000
Alex Garcia: $30,000 (includes $15,000 win bonus)
def. Mike Swick: $48,000
John Howard: $42,000 (includes $21,000 win bonus)
def. Cathal Pendred: $10,000
Cody Garbrandt: $20,000 (includes $10,000 win bonus)
def. Henry Briones: $10,000
Louis Smolka: $30,000 (includes $15,000 win bonus)
def. Neil Seery: $15,000
Cody Pfister: $20,000 (includes $10,000 win bonus)
def. Yosdenis Cedeno: $13,000
* – Stephens fined 20 percent ($8,000) for missing weight; fine was issued to Bermudez
Reebok Sponsorship Payout
Conor McGregor: $30,000
def. Chad Mendes: $30,000
Champ Robbie Lawler: $40,000
def. Rory MacDonald: $30,000
Jeremy Stephens: $20,000
def. Dennis Bermudez: $5,000
Gunnar Nelson: $5,000
def. Brandon Thatch: $2,500
Thomas Almeida: $2,500
def. Brad Pickett: $10,000
Matt Brown: $15,000
def. Tim Means: $5,000
Alex Garcia: $2,500
def. Mike Swick: $10,000
John Howard: $10,000
def. Cathal Pendred: $2,500
Cody Garbrandt: $2,500
def. Henry Briones: $2,500
Louis Smolka: $2,500
def. Neil Seery: $2,500
Cody Pfister: $2,500
def. Yosdenis Cedeno: $2,500