It's in the 105lb Minimumweight division that we find one of the oddest changes as Japan's Ryuji Hara (#4) gets dropped one place courtesy of Jose Argumedo (#3) who becomes the top challenger for Katsunari Takayama. Argumedo lost to Carlos Velarde (#11) on May 3rd though has some how climbed 4 places whilst Velarde has some how dropped from #8 to #11. Which ever brain trust working for the IBF did that deserves to have a lobotomy we're afraid.
With Argumedo shooting up the rankings, inexplicably, we've seen various fighters drop down the rankings whilst we've also seen the recently deposed former WBO champion Merlito Sabillo (#13) move in to the IBF rankings and Japan's Shin Ono (#9) gaining one place in valiant loss to Takayama.
All the changes here have left us with Hara (#3), Virgilio Silvano (#7), Go Odaira (#8), Ono (#9), Florante Condes (#10), Merlito Sabillo (#13) and Mateo Handig (#15)
In the 108lb Light Flyweight division we only see two changes and both of them are understandable. Firstly we've seen Johnriel Casimero removed as champion, something we knew was happening after the Filipino failed to make weight for his defence against Colombia's Mauricio Fuentes (previously #13). Fuentes's loss to Casimero has blown him out of the rankings and he has been replaced by Mexico's Ganigan Lopez (#12). In all honesty we can't understand why Lopez wasn't already ranked.
As a result of the lack of changes we still have Randy Petalcorin (#6), Yu Kimura (#8), Jonathan Taconing (#9), Atsushi Kakutani (#14) and Rey Loreto (#15)
With John Riel Casimero (#4) having moved up to Flyweight he has been given an immediate ranking in his new division. Casimero's #4 position has dropped a number of fighters down the rankings and effectively pushed Romania's Silvio Olteanu (previously #15) out of the rankings.
In terms of ranked fighters we have Casimero (#4), Suguru Muranaka (#6), Milan Melindo (#8), Kazuto Ioka (#9), Froilan Saludar (#12), Rocky Fuentes (#13), Toshiyuki Igarashi (#14) and Joebert Alvarez (#15) and of course we have the current world champion Amnat Ruenroeng who defended his title earlier in the month against Ioka.
The first change at Super Flyweight has been that of Jerwin Ancajas (#5) who has shot up the rankings from the #15 position. Ancajas's climb has been joined by former champion Rodrigo Guerrero (#6) dropping out allowing a space for Japanese champion Yohei Tobe (#15).
This leaves us with a number of ranked fighters with Teiru Kinoshita (#3) leading the way. Behind Kinoshita are Arthur Villanueva (#4), Ancajas (#5) Go Onaga (#8), Rusalee Samor (#11), Mark Anthony Geraldo (#13), Rex Tso (#14) and Tobe (#15).
Whilst we like the amount of ranked fighters that we have we're also very happy to, finally, have had a date confirmed for Kinoshita's title fight with Zolani Tete which will take place on 18th July.
In terms of change we've seen a lot of changes in the Bantamweight division with former Super Flyweight champion Daiki Kameda (#3) becoming a new entry in the division. As well as Kameda entering the ranking we've seen Ryosuke Iwasa (#5) shoot up the rankings thanks, in part, to Karim Guerfi (previously #5) being stopped by Zhanat Zhakiyanov (#8). Aside from that we've not seen many other notable changes.
This leaves us with just 5 ranked fighter in the form of Daiki Kameda (#3), Iwasa (#5), Zhakiyanov (#8), Kohei Oba (#10) and Ryo Akaho (#12).
In the Super Bantamweight division we recently saw Kiko Martinez defeat Hozumi Hasegawa (previously #13). That loss for Hasegawa has obviously dropped him out of the rankings but we still have a lot of ranked fighters with leading contender being Hidenori Otake (#3). Hasegawa's oss has, oddly, seen him swapped straight out for Genesis Servania (#13) rather than seen another fighter move a fighter up the rankings.
The removal of Hasegawa has been the only change so we've been left with Hidenori Otake (#3), Yasutaka Ishimoto (#5), Genesis Servania (#13) and Shingo Wake (#14) whilst the Thai is Mike Tawatchai (#6).
In the Featherweight division we've seen Chonlatarn Piriyapinyo (#4) move up one place as he moves towards a second world title fight. Oddly he's the only Asian to have changed place with both Hisashi Amagasa (#8) and Marvin Sonsona (#9) remaining where they were a month ago.
The Super Featherweight division has seen some shake ups with Arash Usmanee (previously #9) being removed as Francisco Vargas (previously #10 moves up a place). Although Usmanee has been taken out we have seen Ryan Sermona (#12) enter the rankings and also Andrey Klimov (#15).
In total the fighters of interest to us as Michael Farenas (#4), Masao Nakamura (#5), Sermona (#12) and Klimov (#15)
At Lightweight there have been a few minor changes but none of them have effect any fighter of interest to ourselves and as a result we still have Rustam Nugaev (#6), Takahiro Ao (#8), Dennis Shafikov (#10), IK Yang (#13) and Masayoshi Nakatani (#15).
Albert Mensah (#11) has been dropped hard from previously sitting at #5, this has allowed Thailand's Patomsuk Pathompothong (#11) to move up one place. The only other Asian fighter worth noting is Anton Novikov (#15) who is where he was a month ago.
The only ranked Asian Welterweight is Yoshihiro Kamegai (#7) who is where he was a month ago. As we now know he'll be fighting Robert Guerrero next in a huge bout in the US in June.
As with the Welterweight division we've seen no major change with Charlie Ota (#9) remaining where he was.
In the Middleweight division we've seen Matt Korobov (#12) brought back in to the rankings after having been mysterious dropped from the rankings a month ago.
Super Middleweight has seen Maksim Vlasov (#11) drop two places whilst Kazakh-German Dmitri Sartison (#10) has remained where he was a month ago.
The Light Heavyweight division has seen Dmitry Sukhotsky (#12) drop one place whilst his compatriot Igor Mikhalkin (#15) has remained where he was.
The Crusierweight rankings haven't changed and as a result we still have Rakhim Chakhkiev (#6), Alexander Alexeev (#8), Grigory Drozd (#11) and Murat Gassiev (#15).
In the Heavyweight division we have still have Uzbek fighter Ruslan Chagaev (#3) and Alexander Ustinov (#5) both in the top 15.
(Image courtesy of the IBF)