On November 22, 1996, a 25-year-old Junior Jones (42-2, 26 KOs) got a shot at the WBO super-bantamweight title held by 22-year-old Mexican boxer Marco Antonio Barrera (43-0, 31 KOs).
Jones came in to the fight on a 9-fight win streak with a 59% KO rate, and was fighting after a gap of 2 months and 12 days. Barrera was on a 43-fight win streak with a 72% KO rate, and fighting after a layoff of 2 months and 8 days.
Junior Jones stopped the champion via TKO in the 5th round of the 12-round world-title fight, and is crowned the new WBO super-bantamweight champion. Jones improves his record to 43-2 (27 KOs), while Barrera adds a loss to his record at 43-1.
On April 18, 1997, Junior Jones and Marco Antonio Barrera met again in an immediate rematch.
Jones came in to the fight on a 10-fight win streak with a 60% KO rate, and was fighting after a gap of 4 months and 27 days. Barrera was on a -1-fight win streak with a 70% KO rate, and fighting after a layoff of 4 months and 27 days.
Junior Jones defeated Marco Antonio Barrera via unanimous decision in the rematch and successfully defended his WBO super-bantamweight title. Jones improves his record to 44-2, while Barrera adds a loss to his record at 43-2.
On October 23, 1993, a 22-year-old Junior Jones (30-0, 22 KOs) got a shot at the WBA bantamweight title held by 24-year-old Colombian boxer Jorge Eliécer Julio (26-0, 22 KOs).
Jones came in to the fight on a 30-fight win streak with a 73% KO rate, and was fighting after a gap of 2 months and 13 days. Julio was on a 26-fight win streak with a 84% KO rate, and fighting after a layoff of 3 months and 15 days.
Junior Jones defeated Jorge Eliécer Julio via unanimous decision and wins the WBA title — in his first world-title fight. Jones improves his record to 31-0, while Julio adds a loss to his record at 26-1.
On January 8, 1994, the 23-year-old WBA bantamweight world champion, Junior Jones (31-0, 22 KOs), faced Elvis Álvarez, in a title defense fight.
Jones came in to the fight on a 31-fight win streak with a 71% KO rate, and was fighting after a gap of 2 months and 16 days.
Junior Jones defeated Elvis Álvarez via unanimous decision and successfully defended his WBA bantamweight title. Jones improves his record to 32-0
On April 10, 1999, a 28-year-old Junior Jones (45-4, 27 KOs) and Richard Evatt met in the ring in a featherweight bout.
Jones came in to the fight on a 1-fight win streak with a 55% KO rate, and was fighting after a gap of 1 month and 24 days.
Junior Jones stopped Richard Evatt via TKO in the 11th round. Jones improves his record to 46-4 (28 KOs)
On February 17, 1999, a 28-year-old Junior Jones (44-4, 27 KOs) and Tom Johnson met in the ring in a super-featherweight bout.
Jones came in to the fight on a 2-fight losing streak with a 56% KO rate, and was fighting after a gap of 5 months and 5 days.
Junior Jones defeated Tom Johnson via unanimous decision in the 12-round super-featherweight fight. Jones improves his record to 45-4
On March 23, 1996, a 25-year-old Junior Jones (39-2, 25 KOs) and a 30-year-old Orlando Canizales (42-2-1, 31 KOs) met in the ring in a super-bantamweight bout.
Jones came in to the fight on a 6-fight win streak with a 61% KO rate, and was fighting after a gap of 2 months and 11 days. Canizales was on a 4-fight win streak with a 68% KO rate, and fighting after a layoff of 4 months and 19 days.
Junior Jones defeated Orlando Canizales via split decision in the 12-round super-bantamweight fight. Jones improves his record to 40-2, while Canizales adds a loss to his record at 42-3-1.
On November 13, 1992, a 21-year-old Junior Jones (25-0, 17 KOs) and Jose Quirino met in the ring in a bantamweight bout.
Jones came in to the fight on a 25-fight win streak with a 68% KO rate, and was fighting after a gap of 1 month and 27 days.
Junior Jones stopped Jose Quirino via KO in the 3rd round. Jones improves his record to 26-0 (18 KOs)
On March 6, 1993, a 22-year-old Junior Jones (27-0, 19 KOs) and Juan Pablo Salazar met in the ring in a bantamweight bout.
Jones came in to the fight on a 27-fight win streak with a 70% KO rate, and was fighting after a gap of 1 month and 19 days.
Junior Jones stopped Juan Pablo Salazar via KO in the 4th round. Jones improves his record to 28-0 (20 KOs)
On September 17, 1992, a 21-year-old Junior Jones (24-0, 16 KOs) and Eddie Rangel met in the ring in a bantamweight bout.
Jones came in to the fight on a 24-fight win streak with a 66% KO rate, and was fighting after a gap of 28 days.
Junior Jones stopped Eddie Rangel via TKO in the 7th round. Jones improves his record to 25-0 (17 KOs)