Before the two top 160-pound fighters step through the ropes and go to battle for middleweight supremacy, seven fights will take place. Two untelevised will occur, followed by three fights you can watch for free before three-bout main card highlighted by Golovkin-Derevyanchenko.

Here's a complete guide to the Gennadiy Golovkin vs. Sergiy Derevyanchenko fight, which is available for streaming on DAZN rather than traditional pay-per-view, and how you can view the undercard for no cost.

What time is the Gennadiy Golovkin vs. Sergiy Derevyanchenko undercard and main event?

The undercard for Gennadiy Golovkin vs. Sergiy Derevyanchenko will start at 7 p.m. ET on Saturday, Oct. 5. Here are the fights that make up the undercard:

• Kamil Szeremeta vs. Oscar Cortes; Middleweight
• Brian Ceballo vs. Ramal Amanov; Catch Weight at 149 pounds
• Ali Akhmedov vs. Andrew Hernandez; Super Middleweight

The main card, exclusively on DAZN, will start at 9 p.m. ET, with the following fights:

• Ivan Baranchyk vs. Gabriel Bracero; Super Lightweight
• Israil Madrimov vs. Alejandro Barrera; Super Welterweight
• Gennadiy Golovkin vs. Sergiy Derevyanchenko; Middleweight

How to watch the GGG vs. Derevyanchenko undercard and main event

The GGG vs. Derevyanchenko undercard and main event is not available via traditional pay-per-view methods. Instead, fans in North America can sign up to watch the fight online with DAZN, the global sports live-streaming service.

If you do not have DAZN, you can still watch the undercard on the DAZN social media pages which include Facebook, Twitter and YouTube. 

How much does GGG vs. Derevyanchenko cost?

The GGG vs. Derevyanchenko undercard is free on the DAZN social media pages.

The main card, featuring Gennadiy Golovkin vs. Sergiy Derevyanchenko, is available exclusively on DAZN.

A new subscriber to DAZN can sign up for a monthly subscription or annual pass to watch the fight. The annual pass — which includes access to all of DAZN’s live events, as well as highlights, replays, behind-the-scenes features, original shows and live reports — is $99.99, which averages out to a little over $8 a month. For those who want a monthly-plan instead of the longer-term value, fight fans can sign up for a monthly option for $19.99.

GGG vs. Derevyanchenko full card, with weigh-in results

• Gennadiy Golovkin (159.2) vs. Sergiy Derevyanchenko (159) for the vacant IBF title and IBO middleweight titles
• Israil Madrimov (153.4) vs. Alejandro Barrera (152.6); Super welterweight
• Ivan Baranchyk (139.6) vs. Gabriel Bracero (140); Super lightweight
• Ali Akhmedov (167.2) vs. Andrew Hernandez (167.6); Super middleweight
• Brian Ceballo (148.6) vs. Ramal Amanov (148.4); Catch Weight at 149 pounds
• Kamil Szeremeta (159.4) vs. Oscar Cortez (160); Middleweight
• Joe Ward (173.4) vs. Marco Delgado (173.8); Light heavyweight
• Isiah Seldon (159.4) vs. Nikita Ababiy (160.6); Catch Weight at 149