On May 16, 2015, the 27-year-old WBC and The Ring flyweight world champion, Román González (42-0, 36 KOs), faced a 35-year-old Mexican boxer Édgar Sosa (51-8, 30 KOs), in a title defense fight.
González came in to the fight on a 42-fight win streak with a 85% KO rate, and was fighting after a gap of 2 months and 18 days. Sosa was on a 2-fight win streak with a 50% KO rate, and fighting after a layoff of 6 months and 8 days.
Román González made very easy work of Édgar Sosa, stopping the challenger via TKO in the 2nd. González improves his record to 43-0 (37 KOs), while Sosa adds a loss to his record at 51-9.
On September 10, 2016, a 29-year-old Román González (45-0, 38 KOs) got a shot at the WBC super-flyweight title held by 28-year-old Mexican boxer Carlos Cuadras (35-0-1, 27 KOs).
González came in to the fight on a 45-fight win streak with a 84% KO rate, and was fighting after a gap of 4 months and 18 days. Cuadras was on a 5-fight win streak with a 75% KO rate, and fighting after a layoff of 4 months and 18 days.
Román González defeated Carlos Cuadras via unanimous decision and wins the WBC title. González improves his record to 46-0, while Cuadras adds a loss to his record at 35-1-1.
On February 29, 2020, a 32-year-old Román González (48-2, 40 KOs) got a shot at the WBA (Super) super-flyweight title held by 30-year-old British boxer Kal Yafai (26-0, 15 KOs).
González came in to the fight on a 2-fight win streak with a 80% KO rate, and was fighting after a gap of 2 months and 6 days. Yafai was on a 26-fight win streak with a 57% KO rate, and fighting after a layoff of 8 months.
Román González stopped the champion via TKO in the 9th round of the 12-round world-title fight, and is crowned the new WBA (Super) super-flyweight champion. González improves his record to 49-2 (41 KOs), while Yafai adds a loss to his record at 26-1.
On September 5, 2014, a 27-year-old Román González (39-0, 33 KOs) got a shot at the WBC and The Ring flyweight titles held by 31-year-old Japanese boxer Akira Yaegashi (20-3, 10 KOs).
González came in to the fight on a 39-fight win streak with a 84% KO rate, and was fighting after a gap of 4 months and 30 days. Yaegashi was on a 5-fight win streak with a 43% KO rate, and fighting after a layoff of 4 months and 30 days.
Román González stopped the champion via TKO in the 9th round of the 12-round world-title fight, and is crowned the new WBC and The Ring flyweight champion. González improves his record to 40-0 (34 KOs), while Yaegashi adds a loss to his record at 20-4.
On April 28, 2012, the 24-year-old WBA light-flyweight world champion, Román González (31-0, 26 KOs), faced Ramón García Hirales, in a title defense fight.
González came in to the fight on a 31-fight win streak with a 83% KO rate, and was fighting after a gap of 1 month and 11 days.
Román González stopped Ramón García Hirales via KO in the 4th round of the 12-round world-title fight, and successfully defended his WBA light-flyweight title. González improves his record to 32-0 (27 KOs)
On September 15, 2008, a 21-year-old Román González (20-0, 18 KOs) got a shot at the WBA strawweight title held by Yutaka Niida.
González came in to the fight on a 20-fight win streak with a 90% KO rate, and was fighting after a gap of 2 months and 3 days.
Román González stopped the champion via TKO in the 4th round of the 12-round world-title fight, winning the first world title of his career, and is crowned the new WBA strawweight champion. González improves his record to 21-0 (19 KOs)
On October 1, 2011, the 24-year-old WBA light-flyweight world champion, Román González (29-0, 24 KOs), faced Omar Soto, in a title defense fight.
González came in to the fight on a 29-fight win streak with a 82% KO rate, and was fighting after a gap of 2 months and 15 days.
Román González made very easy work of Omar Soto, stopping the challenger via KO in the 2nd. González improves his record to 30-0 (25 KOs)
On November 22, 2014, the 27-year-old WBC and The Ring flyweight world champion, Román González (40-0, 34 KOs), faced Rocky Fuentes, in a title defense fight.
González came in to the fight on a 40-fight win streak with a 85% KO rate, and was fighting after a gap of 2 months and 17 days.
Román González stopped Rocky Fuentes via TKO in the 6th round of the 12-round world-title fight, and successfully defended his WBC and The Ring flyweight titles. González improves his record to 41-0 (35 KOs)
On October 17, 2015, the 28-year-old WBC and The Ring flyweight world champion, Román González (43-0, 37 KOs), faced a 34-year-old American boxer Brian Viloria (36-4, 22 KOs), in a title defense fight.
González came in to the fight on a 43-fight win streak with a 86% KO rate, and was fighting after a gap of 5 months and 1 day. Viloria was on a 4-fight win streak with a 55% KO rate, and fighting after a layoff of 2 months and 22 days.
Román González stopped Brian Viloria via TKO in the 9th round of the 12-round world-title fight, and successfully defended his WBC and The Ring flyweight titles. González improves his record to 44-0 (38 KOs), while Viloria adds a loss to his record at 36-5.
On July 16, 2011, the 24-year-old WBA light-flyweight world champion, Román González (28-0, 23 KOs), faced Omar Salado, in a title defense fight.
González came in to the fight on a 28-fight win streak with a 82% KO rate, and was fighting after a gap of 3 months and 27 days.
Román González stopped Omar Salado via TKO in the 7th round of the 12-round world-title fight, and successfully defended his WBA light-flyweight title. González improves his record to 29-0 (24 KOs)