On June 8, 2019, a 25-year-old Carlos Ruiz (16-6-2, 6 KOs) and a 30-year-old Brazilian boxer Robson Conceição (12-0, 6 KOs) met in the ring.
Ruiz came in to the fight on a 2-fight losing streak with a 25% KO rate, and was fighting after a gap of 3 months and 7 days. Conceição was on a 12-fight win streak with a 50% KO rate, and fighting after a layoff of 2 months and 8 days.
Robson Conceição defeated Carlos Ruiz via unanimous decision in the 8-round fight. Conceição improves his record to 13-0, while Ruiz adds a loss to his record at 16-7-2.
On March 1, 2019, a 25-year-old Carlos Ruiz (16-5-2, 6 KOs) and Hairon Socarras met in the ring.
Ruiz came in to the fight on a 1-fight losing streak with a 26% KO rate, and was fighting after a gap of 6 months and 11 days.
Carlos Ruiz lost to Hairon Socarras via unanimous decision in the 8-round fight, and adds an loss to his record at 16-6-2.
On August 18, 2018, a 25-year-old Carlos Ruiz (16-4-2, 6 KOs) and a 21-year-old American boxer Shakur Stevenson (7-0, 4 KOs) met in the ring.
Ruiz came in to the fight on a 1-fight win streak with a 27% KO rate, and was fighting after a gap of 2 months and 19 days. Stevenson was on a 7-fight win streak with a 57% KO rate, and fighting after a layoff of 2 months and 9 days.
Shakur Stevenson defeated Carlos Ruiz via unanimous decision in the 8-round fight. Stevenson improves his record to 8-0, while Ruiz adds a loss to his record at 16-5-2.
On October 20, 2017, a 24-year-old Carlos Ruiz (15-3-2, 5 KOs) and Luis Montano Alvarez met in the ring for the 2nd time, in a super-featherweight bout.
Ruiz came in to the fight on a 1-fight losing streak with a 25% KO rate, and was fighting after a gap of 10 months and 4 days.
Carlos Ruiz lost to Luis Montano Alvarez via majority decision in the 10-round super-featherweight fight, and adds an loss to his record at 15-4-2.
On December 16, 2016, a 23-year-old Carlos Ruiz (15-2-2, 5 KOs) and Deiner Berrio met in the ring.
Ruiz came in to the fight after a draw in his last fight with a 26% KO rate, and was fighting after a gap of 5 months and 15 days.
Carlos Ruiz lost to Deiner Berrio via unanimous decision in the 10-round fight, and adds an loss to his record at 15-3-2.
On December 11, 2015, a 22-year-old Carlos Ruiz (14-1-1, 5 KOs) and a 34-year-old Japanese boxer Hozumi Hasegawa (34-5, 15 KOs) met in the ring.
Ruiz came in to the fight on a 1-fight win streak with a 31% KO rate, and was fighting after a gap of 2 months and 23 days. Hasegawa was on a 1-fight win streak with a 38% KO rate, and fighting after a layoff of 7 months and 2 days.
Hozumi Hasegawa defeated Carlos Ruiz via unanimous decision in the 10-round fight. Hasegawa improves his record to 35-5, while Ruiz adds a loss to his record at 14-2-1.
On November 21, 2014, a 21-year-old Carlos Ruiz (13-0-1, 5 KOs) and Francisco Hernandez Rojo met in the ring.
Ruiz came in to the fight on a 5-fight win streak with a 35% KO rate, and was fighting after a gap of 1 month and 11 days.
Carlos Ruiz lost to Francisco Hernandez Rojo via split decision in the 10-round fight, and adds an loss to his record at 13-1-1.