The junior flyweight division is ruled by one man, who if he was of larger size and stature would be renowned by fight fans as being one of the best active boxers in any weight class. A talented group of contenders await a chance at the top dog.

Junior flyweight division rankings last updated March 2010.

1. Ivan Calderon – The former WBO minimum weight champion, making 11 defenses of his title at that weight is the current WBO junior flyweight champion with a record of 5-0-1 in the new weight class. His last two fights were both stopped due to cuts stemming from headbutts against Rodel Mayol, the first of which was a technical draw and the second of which was a decision win.
2. Giovanni Segura – The WBA champion avenged the first loss of his career at the hands of Cesar Canchila, and now has a 5 fight winning streak. He previously bested Carlos Tamara several years ago.
3. Rodel Mayol – The record isn’t pretty, going 4-4-2 in his last 10 fights, but he has fought the best and was pushing Calderon in both of their encounters before each bout had to be stopped after headbutts led to cuts on Calderon’s head. He also managed to squeeze in a win over longtime WBC champion Edgar Sosa, and is now the defending champion. His last fight against Omar Nino Romero was also stopped short and forced into a Technical Draw.
4. Edgar Sosa – Sosa has made 9 defenses of his WBC junior flyweight title, and holds wins over Sonny Boy Jaro, Juanito Rubillar and Brian Viloria. He’s 36-5, but he hadn’t lost in 6 years until Mayol stopped him in 2 rounds in November 2009.
5. Carlos Tamara – Tamara was able to take Brian Viloria’s IBF strap after he dropped down from Flyweight to take the bout against the new champion. It was just his second fight at junior flyweight over the past 3 plus years, as he had been campaigning as a 112 lber.
6. Brian Viloria – “The Hawaiian Punch” Brian Viloria was a rapid rising prospect at minimum weight after his time in the Olympics. He stumbled in his ascent to the top of the boxing world, and finally regained his form to win the IBF title against Ulises Solis before suffering a 12th round TKO loss in a fight he was wining on the scorecards.
7. Ulises Solis – Solis successfully defended his IBF junior flyweight strap 9 times before facing a more focused Viloria and getting stopped in the 11th round. He has now won two more fights including an IBF eliminator
8. Omar Nino Romero – Romero holds a win against Viloria and fought him to a draw in their second fight only to see the decision changed to a no contest due to a failed post fight drug test. Years ago he also beat a young Edgar Sosa. In 2009 he avenged a loss to Juanito Rubillar, and is coming off a technical draw against Rodel Mayol.
9. Johnriel Casimero - The interim WBO champion after besting Cesar Canchila, he now gets a shot at top dog Ivan Calderon. He’s undefeated with a record of 14 – 0 and 8 knockouts.
10. Juan Carlos Reveco - He’s 6-0 since losing to Brahim Asloum in 2007. He’s now the interim WBA titleholder which means he’s looking at a future date against Giovanni Segura.

More Boxing Weight Class Rankings

• <105 lbs – Boxing Minimum Weight Division Rankings
• 108-112 lbs – Boxing Flyweight Division Rankings

Written by: Jake Emen