Shane Mosley Jr. losses
Over 12 years as a professional, Shane Mosley Jr. has compiled a 23-5 (13) record, including four title fights across two weight classes. He has five losses, two of them in title fights.
5. Shane Mosley Jr. loses to Jesús Ramos Jr. via unanimous decision
On December 6, 2025 Shane Mosley Jr. fought Jesús Ramos Jr. for the vacant WBC interim middleweight title. Jr. was 33 years old with a record of 22-4, and Jr. was 24 with a record of 23-1. Jr. was on a 5-fight winning streak and Jr. was on a 3-fight winning streak. Jr. lost via unanimous decision. Failed to win the vacant title. Went the distance with Jr..
4. Shane Mosley Jr. loses to Jason Quigley via majority decision
On May 29, 2021 Shane Mosley Jr. fought Jason Quigley for the vacant WBO NABO and WBONABO middleweight titles. Jr. was 29 years old with a record of 17-3, and Quigley was 30 with a record of 18-1. Jr. was on a 4-fight winning streak and Quigley was on a 2-fight winning streak. Jr. lost via majority decision. Failed to win the vacant title. Went the distance with Quigley.
3. Shane Mosley Jr. loses to Brandon Adams via unanimous decision
On November 9, 2018 Shane Mosley Jr. faced Brandon Adams in a super welterweight bout. Jr. was 26 years old with a record of 13-2, and Adams was 29 with a record of 20-2. Both Jr. and Adams were on a 3-fight winning streak. Jr. lost via unanimous decision. Went the distance with Adams.
2. Shane Mosley Jr. loses to David Toussaint via split decision
On July 2, 2017 Shane Mosley Jr. faced David Toussaint. Jr. was 25 years old with a record of 10-1, and Toussaint was 0 with a record of 0-0. Jr. was on a 8-fight winning streak. Jr. lost via split decision. Went the distance with Toussaint.
1. Shane Mosley Jr. loses to Marchristopher Adkins via split decision
On September 20, 2014 Shane Mosley Jr. faced Marchristopher Adkins. Jr. was 22 years old with a record of 2-0, and Adkins was 0 with a record of 0-0. Jr. was on an undefeated 2-fight winning streak. Jr. lost via split decision. Went the distance with Adkins.
