Mikaela Mayer became a two-division champion following her majority-decision victory over Sandy Ryan at The Theater at Madison Square Garden in New York on Friday.
Mayer (20-2, 5 KOs) won by scorecards of 97-93, 96-94 and 95-95 to capture the WBO welterweight title. Mayer is a former IBF and WBO junior lightweight champion who also held the WBC interim lightweight title.
With the victory, Mayer moves up three spots to No. 2, while Ryan falls to No. 3 in the 147-pound division.
"I want to finish what I started and go undisputed," Mayer said after the fight. "I came very close at lightweight. But my body outgrew that weight. I'm comfortable now. I feel like I'm stronger than ever. I'm still in my prime, as you can see. So I'm coming for the other champions."
Also on Friday, in Atlanta, Georgia, Alycia Baumgardner retained her undisputed junior lightweight championship after her fight with Delfine Persoon ended in a no contest. After dropping Persoon in Round 1, Baumgardner was up 30-26 on all three scorecards ahead of Round 4, but an accidental clash of head left Persoon with a gash over her right eye, forcing the fight to be stopped.
Baumgardner returned to the No. 1 spot in the division after being removed for testing positive for a banned substance in July 2023. Persoon moves down to No. 2.
Saturday in Sheffield, England, Terri Harper defeated Rhiannon Dixon by unanimous decision to win the WBO lightweights title. The win earned Harper a belt in a third division -- she is a former junior lightweight and junior middleweight champion.
Harper enters the 135-pound rankings at No. 3 while Dixon moves down to No. 4.
Rankings will be updated every Tuesday. They'll be based on recent bouts, head-to-head competition and the quality of opponent. As with almost everything, until fighters square off against one another, there is a layer of subjectivity to it. Fighters who haven't fought in 18 months and don't have a fight scheduled will be removed from the rankings until they fight again.
For a list of the current champions in all weight classes, click here . For women's P4P rankings, click here .
175+ pounds - Super middleweight - Middleweight - Junior middleweight - Welterweight - Junior welterweight - Lightweight - Junior lightweight - Featherweight - Junior featherweight - Bantamweight - Junior bantamweight - Flyweight - Junior flyweight - Strawweight - Atomweight
175+ POUNDS
1. Claressa Shields* Previous ranking: N/R
Record: 15-0, 3 KO
Last: W (KO2) Vanessa Lepage-Joanisse, July 27
Next: TBA
2. Lani Daniels** Previous ranking: No. 1
Record: 11-2-2, 1 KOs
Last: W (UD10) Bolatito Oluwole, Sept. 7
Next: TBA
3. Che Kenneally*** Previous ranking: N/R
Record: 14-4-3, 7 KOs
Last: W (TKO3) Angie Paola Rocha, July 20
Next: TBA
4. Raquel Miller Previous ranking: No. 4
Record: 13-0, 6 KOs
Last: W (TKO1) Angie Paola Rocha, March 10
Next: TBA
5. Vanessa Lepage-Joanisse Previous ranking: No. 2
Record: 7-2, 2 KO
Last: L (KO2) Claressa Shields, July 27
Next: TBA
*Editor's note: Claressa Shields is the WBC heavyweight champion and the WBO light heavyweight champion.
**Editor's note: Lani Daniels is the IBF light heavyweight champion.
***Editor's note: Che Kenneally is the WBA light heavyweight champion.
SUPER MIDDLEWEIGHT (Up to 168 pounds)
1. Savannah Marshall Previous ranking: No. 1
Record: 13-1, 10 KOs
Last: W (MD10) Franchon Crews Dezurn, July 1
Next: TBA
2. Franchon Crews-Dezurn Previous ranking: No. 2
Record: 9-2, 2 KOs
Last: W (UD10) Shadasia Green, Dec. 15
Next: TBA
3. Shadasia Green Previous ranking: No. 3
Record: 14-1, 11 KOs
Last: W (UD8) Natasha Spence, July 20
Next: TBA
4. Abril Argentina Vidal Previous ranking: No. 4
Record: 10-2, 4 KOs
Last: L (SD10) Vanessa Lepage-Joanisse, March 7
Next: TBA
5. Olivia Curry Previous ranking: No. 5
Record: 7-2-1, 2 KOs
Last: Draw (SD16) Melody Popravak, April 27
Next: TBA
MIDDLEWEIGHT (Up to 160 pounds)
1. Claressa Shields Previous ranking: No. 1
Record: 15-0, 3 KOs
Last: W (KO2) Vanessa Lepage-Joanisse, July 27
Next: TBA
2. Savannah Marshall Previous ranking: No. 2
Record: 13-1, 10 KOs
Last: W (MD10) Franchon Crews Dezurn, July 1
Next: TBA
3. Melinda Watpool Previous ranking: No. 3
Record: 7-0, 2 KO
Last: W (UD10) Natasha Spence, Sept. 20
Next: TBA
4. Desley Robinson Previous ranking: No. 4
Record: 8-3-3, 2 KOs
Last: W (UD10) Mapule Ngubane, Aug. 23
Next: TBA
5. Olivia Curry Previous ranking: No. 5
Record: 7-2-1, 2 KOs
Last: Draw (SD16) Melody Popravak, April 27
Next: TBA
JUNIOR MIDDLEWEIGHT (Up to 154 pounds)
1. Terri Harper Previous ranking: No. 1
Record: 15-2-2, 6 KOs
Last: W (UD10) Rhiannon Dixon, Sept. 28
Next: TBA
2. Ema Kozin Previous ranking: No. 2
Record: 24-1-1, 12 KOs
Last: W (SD10) Hannah Rankin, Nov. 18
Next: TBA
3. Femke Hermans Previous ranking: No. 3
Record: 18-4, 7 KOs
Last: W (UD6) Ester Konecna, Jan. 13
Next: TBA
4. Cecilia Braekhus Previous ranking: No. 4
Record: 38-2-1, 9 KOs
Last: W (UD10) Maricela Cornejo, Aug. 10
Next: TBA
5. Dilara Yucel Previous ranking: No. 5
Record: 16-0, 11 KOs
Last: W (KO1) Sonja Pilipovic, June 22
Next: TBA
WELTERWEIGHT (Up to 147 pounds)
1. Natasha Jonas Previous ranking: No. 1
Record: 15-2-1, 9 KOs
Last: W (SD10) Mikaela Mayer, Jan. 20
Next: TBA
2. Mikaela Mayer Previous ranking: No. 5
Record: 20-2, 5 KOs
Last: W (MD10) Sandy Ryan, Sept. 27
Next: TBA
3. Sandy Ryan Previous ranking: No. 2
Record: 7-2-1, 3 KOs
Last: L (MD10) Mikaela Mayer, Sept. 27
Next: TBA
4. Lauren Price Previous ranking: No. 3
Record: 7-0, 1 KO
Last: W (TD9) Jessica McCaskill, May 11
Next: TBA
5. Ivana Habazin Previous ranking: No. 4
Record: 23-5, 7 KOs
Last: W (UD10) Kinga Magyar, April 20
Next: TBA
JUNIOR WELTERWEIGHT (Up to 140 pounds)
1. Katie Taylor Previous ranking: No. 1
Record: 23-1, 6 KOs
Last: W (MD10) Chantelle Cameron, Nov. 25
Next: Nov. 15 vs. Amanda Serrano
2. Chantelle Cameron Previous ranking: No. 2
Record: 19-1, 8 KOs
Last: W (MD10) Elhem Mekhaled, July 20
Next: TBA
3. Amanda Serrano Previous ranking: N/R
Record: 47-2-1, 31 KOs
Last: W (TKO2) Stevie Morgan, July 20
Next: Nov. 15 vs. Katie Taylor
4. Jessica McCaskill Previous ranking: No. 3
Record: 12-4-1, 5 KOs
Last: L (UD10) Lauren Price, May 11
Next: TBA
5. Elhem Mekhaled Previous ranking: No. 4
Record: 17-3, 3 KOs
Last: L (MD10) Chantelle Cameron, July 20
Next: TBA
LIGHTWEIGHT (Up to 135 pounds)
1. Katie Taylor Previous ranking: No. 1
Record: 23-1, 6 KOs
Last: W (MD10) Chantelle Cameron, Nov. 25
Next: Nov. 15 vs. Amanda Serrano
2. Caroline Dubois Previous ranking: No. 3
Record: 10-0, 5 KO
Last: W (UD10) Maria Moneo, Aug. 3
Next: TBA
3. Terri Harper Previous ranking: N/R
Record: 15-2-2, 6 KOs
Last: W (UD10) Rhiannon Dixon, Sept. 28
Next: TBA
4. Rhiannon Dixon Previous ranking: No. 2
Record: 10-0, 1 KO
Last: W (UD10) Karen Elizabeth Carabajal, April 13
Next: Sept. 28 vs. Terri Harper
5. Beatriz Fereira Previous ranking: No. 4
Record: 5-0, 2 KO
Last: W (TUD6) Yanina del Carmen Lescano, April 27
Next: TBA
JUNIOR LIGHTWEIGHT (Up to 130 pounds)
1. Alycia Baumgardner Previous ranking: N/R
Record: 15-1, 1 NC, 19 KOs
Last: No contest (NC4) Delfine Persoon, Sept. 27
Next: TBA
2. Delfine Persoon Previous ranking: No. 1
Record: 49-3, 19 KOs
Last: No contest (NC4) Alycia Baumgardner, Sept. 27
Next: TBA
3. Bo Mi Re Shin Previous ranking: No. 2
Record: 16-2-3, 9 KOs
Last: W (TKO3) Pattarawan Thaosuwan, Oct. 8
Next: TBA
4. Leila Beaudoin Previous ranking: No. 3
Record: 12-1, 1 KO
Last: W (UD10) Lizbeth Crespo, Aug. 17
Next: Nov. 7 vs. Edith Soledad Matthysse
5. Christina Linardatou Previous ranking: No. 4
Record: 14-3, 6 KOs
Last: L (UD10) Alycia Baumgardner, July 15
Next: TBA
FEATHERWEIGHT (Up to 126 pounds)
1. Amanda Serrano Previous ranking: No. 1
Record: 47-2-1, 31 KOs
Last: W (TKO2) Stevie Morgan, July 20
Next: Nov. 15 vs. Katie Taylor
2. Skye Nicolson Previous ranking: No. 2
Record: 11-0, 1 KOs
Last: W (UD10) Dyana Vargas, July 13
Next: Oct. 12 vs. Raven Chapman
3. Nina Meinke Previous ranking: No. 3
Record: 19-3, 4 KOs
Last: W (MD10) Daniela Romina Bermudez, Sept. 21
Next: TBA
4. Sarah Mahfoud Previous ranking: No. 4
Record: 14-2, 3 KOs
Last: L (UD10) Skye Nicolson, April 6
Next: Oct. 12 vs. Danila Ramos
5. Daniela Romina Bermudez Previous ranking: No. 5
Record: 32-5-3, 12 KOs
Last: L (MD10) Nina Meinke, Sept. 21
Next: TBA
JUNIOR FEATHERWEIGHT (Up to 122 pounds)
1. Yamileth Mercado Previous ranking: No. 1
Record: 24-3, 5 KOs
Last: W (UD10) Ramla Ali, June 29
Next: TBA
2. Ellie Scotney Previous ranking: No. 2
Record: 9-0, 0 KOs
Last: W (UD10) Segolene Lefebvre, April 13
Next: Oct. 26 vs. Mea Motu
3. Erika Cruz Previous ranking: No 3
Record: 17-2-1, 3 KOs
Last: Draw (SD10) Nazarena Romero, May 11
Next: TBA
4. Mea Motu Previous ranking: No. 4
Record: 19-0, 7 KOs
Last: W (TKO2) Noppaket Srisawas, April 26
Next: Oct. 26 vs. Ellie Scotney
5. Phannarai Netisri Previous ranking: No. 5
Record: 15-0, 6 KO
Last: W (UD10) Maria Magdalena Rivera, April 13
Next: Oct. 3 vs. Shannon O'Connell
BANTAMWEIGHT (Up to 118 pounds)
1. Dina Thorslund Previous ranking: No. 1
Record: 22-0, 9 KOs
Last: W (UD10) Seren Cetin, May 25
Next: Oct. 25 vs. Terumi Nuki
2. Diana Laura Fernandez Previous ranking: No. 2
Record: 32-4-1, 5 KOs
Last: W (UD10) Sayda Mosquera, June 7
Next: TBA
3. Cherneka Johnson Previous ranking: No. 3
Record: 16-2, 6 KOs
Last: W (MD10) Nina Hughes, May 11
Next: TBA
4. Yuliahn Luna Avila Previous ranking: No. 4
Record: 27-4-1, 4 KOs
Last: W (UD8) Elizabeth Chavez Espinoza, July 13
Next: TBA
5. Miyo Yoshida Previous ranking: No. 5
Record: 17-4, 0 KOs
Last: W (UD10) Ebanie Bridges, Dec. 9
Next: TBA
JUNIOR BANTAMWEIGHT (Up to 115 pounds)
1. Carla Ayelen Merino Previous ranking: No. 1
Record: 14-2, 2 KOs
Last: W (UD10) Micaela Milagros Lujan, April 27
Next: TBA
2. Asley Gonzalez Macias Previous ranking: No. 2
Record: 16-2, 7 KOs
Last: W (SD10) Lourdes Juarez, March 25
Next: TBA
3. Irma Garcia Previous ranking: No. 3
Record: 23-5-1, 4 KOs
Last: W (UD10) Stephanie Silva, Nov. 11
Next: TBA
4. Mizuki Hiruta Previous ranking: No. 4
Record: 6-0, 2 KOs
Last: W (TKO6) Ji Hyun Park, Jan. 12
Next: TBA
5. Clara Lescurat Previous ranking: No. 5
Record: 11-0, 4 KOs
Last: W (UD10) Linn Sandstrom, April 24
Next: TBA
FLYWEIGHT (Up to 112 pounds)
1. Gabriela Celeste Alaniz Previous ranking: No. 4
Record: 15-1, 6 KOs
Last: W (SD10) Marlen Esparza, April 27
Next: TBA
2. Gabriela Fundora Previous ranking: No. 2
Record: 14-0, 6 KOs
Last: W (UD10) Daniela Asenjo, Aug. 10
Next: TBA
3. Kenia Enriquez Previous ranking: No. 3
Record: 28-1, 11 KOs
Last: W (UD10) Maria Salinas, Feb. 2
Next: TBA
4. Marlen Esparza Previous ranking: No. 4
Record: 14-2, 1 KO
Last: L (MD10) Gabriela Celeste Alaniz, April 27
Next: TBA
5. Arely Mucino Previous ranking: No. 5
Record: 32-4-2, 11 KOs
Last: L (KO5) Gabriela Fundora, Oct. 21
Next: TBA
JUNIOR FLYWEIGHT (Up to 108 pounds)
1. Jessica Nery Plata Previous ranking: No. 1
Record: 30-2, 3 KOs
Last: W (SD10) Sarah Bormann, Dec. 16
Next: TBA
2. Evelin Bermudez Previous ranking: No. 2
Record: 20-1-1, 7 KOs
Last: W (TKO8) Jessica Basulto Salazar, May 4
Next: TBA
3. Yesica Yolanda Bopp Previous ranking: No. 2
Record: 39-3, 17 KOs
Last: W (UD10) Roxana Maria Colmenarez, Dec. 16
Next: TBA
4. Kim Clavel Previous ranking: No. 4
Record: 19-2, 3 KOs
Last: W (UD10) Katherine Renee Lindenmuth, May 16
Next: Nov. 14 vs. TBA
5. Aldana Florencia Lopez Previous ranking: No. 5
Record: 11-0, 0 KOs
Last: W (UD10) Veronica Ruiz, Aug. 31
Next: TBA
STRAWWEIGHT (Up to 105 pounds)
1. Seniesa Estrada Previous ranking: No. 1
Record: 26-0, 9 KOs
Last: W (UD10) Yokasta Valle, March 29
Next: TBA
2. Yokasta Valle Previous ranking: No. 2
Record: 31-3, 10 KOs
Last: W (TKO2) Ramandeep Kaur, July 20
Next: TBA
3. Sarah Bormann Previous ranking: No. 3
Record: 18-1, 7 KO
Last: W (UD10) Tamara Elisabet Demarco, May 4
Next: TBA
4. Louisa Hawton Previous ranking: No. 4
Record: 12-2, 6 KO
Last: W (UD10) Viviana Ruiz Corredor, Sept. 7
Next: TBA
5. Tenkai Tsunami Previous ranking: No. 5
Record: 32-13-1, 19 KO
Last: W (UD10) Siriporn Taweesuk, June 10
Next: TBA
ATOMWEIGHT (Up to 102 pounds)
1. Eri Matsuda Previous ranking: No. 1
Record: 7-1-1, 1 KO
Last: W (SD10) Yuko Kuroki, Jan. 12
Next: TBA
2. Tina Rupprecht Previous ranking: No 2
Record: 13-1-1, 3 KOs
Last: W (UD10) Fabiana Bytyqi, Jan. 13
Next: TBA
3. Anabel Ortiz Previous ranking: No. 3
Record: 34-6, 4 KOs
Last: W (UD10) Montserrat Alarcon, Aug. 31
Next: TBA
4. Sumire Yamanaka Previous ranking: No. 4
Record: 8-0, 3 KOs
Last: W (UD10) Mika Iwakawa, Jan. 12
Next: TBA
5. Montserrat Alarcon Previous ranking: No. 5
Record: 19-6-2, 0 KOs
Last: L (UD8) Anabel Ortiz, Aug. 31
Next: TBA
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