The unified women's middleweight champion Claressa Shields has already described herself as the 'GWOAT' - the Greatest Woman of all Time - and she steps in the ring looking to improve her legacy further.
Her opponent is a late replacement, Maricela Cornejo, who comes into the fight as the underdog but with a decent resume of her own.
The 36-year-old is a former title holder, having won the WBC International super middleweight strap back in 2015.
She has had a few shots at a full world title, and is yet to succeed in her ambition to claim one, but an upset on Saturday night would propel her to unified status in one leap.
DAZN takes a look at the career of Cornejo ahead of this huge fight below.
What is Maricela Cornejo's professional record?
Maricela Cornejo boasts a 14-5 professional record with five of those wins coming by way of knockout.
Championships
Maricela Cornejo's first and only world title success came in August 2015 when she beat Latashia Burton for the vacant WBC International women's super middleweight title.
She was unable to win any of her three tilts at a full world title, against Franchon Crews-Dezurn in September 2018 and September 2019, and against Kali Reis in April 2016.
Biggest wins
Maricela Cornejo dominates in International title success; August 15, 2015
Mana Studios, Miami, Florida, USA was the scene for Cornejo's triumph when she faced Latashia Burton and won by unanimous decision.
Going the full 10 rounds, she claimed the vacant WBC International women's super middleweight strap, her sole notable championship achievement so far.
Shields vs. Cornejo fight, date, start time
- Date: Saturday, June 3
- Main card: 9 p.m. EDT / 2 a.m. BST (Sunday)
- Main event ringwalks (approx): TBC
The main card starts at 9 p.m. EDT / 2 a.m. BST (Sunday). The exact fight times are yet to be confirmed.
What channel/stream is Shields vs. Cornejo?
DAZN holds the rights to broadcast the fight globally, except for Latin America, Bulgaria, Poland, Slovenia, Kosovo, Bosnia and Herzegovina, North Macedonia, Montenegro, Croatia, Serbia, Philippines, China, South Africa, France and Nicaragua.
Where is the Shields vs. Cornejo fight?
The fight takes place at Little Caesars Arena in Detroit, Michigan.
Claressa Shields record and bio
- Nationality: American
- Born: March 17, 1995
- Height: 5' 8"
- Reach: 68"
- Total Fights: 13
- Record: 13-0-0 (2 KOs)
Maricela Cornejo record and bio
- Nationality: American
- Date of Birth: April 16, 1987
- Height: 5' 10"
- Reach: 72"
- Total Fights: 21
- Record: 16-5-0 (6 KOs)
Claressa Shields vs. Maricela Cornejo fight card
- Claressa Shields vs. Maricela Cornejo; For Shields' WBA, WBC, WBF, WBO and IBF women's middleweight titles
- Ardreal Holmes Jr. vs. Wendy Toussaint; Super welterweight
- Da'Velle Smith vs. Kahydlian Woods; Middleweight
- Joseph Hicks vs. Antonio Todd; For the WBC Americas silver middleweight title
- Marlon Harrington vs. Gheith Mohamed; Super welterweight
- Joshua James Pagan vs. Ronnell Burnett; Super lightweight
- Vernon Webber vs. Fern. Rod. Simoes de Almeida: Cruiserweight
- Sarah Liegmann vs. Carisse Brown; Featherweight