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The weekend gave the boxing world a new heavyweight beltholder and a new junior flyweight champion. Donnie Nietes won THE RING’s vacant 108-pound title with a ninth-round TKO of Moises Fuentes and Bermane Stiverne won the WBC heavyweight belt with a sixth-round TKO of Chris Arreola.

Heavyweight: Action with two top ten heavyweights was part of a mild shake-up in THE RING’s rankings. The anticipated Stiverne-Arreola rematch ended in dramatic fashion with No. 3-rated Stiverne repeated his victory over Arreola, this time stopping the No. 6-rated contender in six rounds. Stiverne will remain at No. 3 since No. 2-rated Alexander Povetkin and No. 1-rated Kubrat Pulev have better resumes and beaten more styles. However, Arreola’s failed attempt to become the first Mexican-American heavyweight champion will drop him to No. 7. Robert Helenius (19-0, 11 knockouts) will drop from the ratings since he has been inactive for 14 months. Tony Thompson will enter at No. 10. The new ratings will be:

Champion:  Wladimir Klitschko, 62-3, 52 KOs

1. Kubrat Pulev, 20-0, 11 KOs
2. Alexander Povetkin, 26-1, 18 KOs
3. Bermaine Stiverne, 24-1-1, 21 KOs.
4. Tyson Fury, 22-0, 16 KOs
5. Vyacheslav Glazkov, 17-0-1, 11 KOs
6. Tomasz Adamek, 49-3, 29 KOs
7. Chris Arreola, 36-4, 31 KOs
8. Deontay Wilder, 31-0, 31 KOs
9. Bryant Jennings, 18-0, 10 KOs
10.  Tony Thompson, 39-4, 26 KOs.

Flyweight: Unrated Amnat Ruenroeng (13-0, 5 KOs) stunned previously unbeaten Japanese star Kazuto Ioka (14-1, 9 KOs) at 112 pounds. Amnat was ranked until Moruti Mthalane (30-2, 20 KOs) returned to action recently ousting him. This win for Ruenroeng will bring him back into the ratings at No. 7, pushing down Toshiyuki Igarashi (30-2, 20 KOs), who’s been inactive since September 2013 and is now No. 8, Giovanni Segura (32-3-1, 28 KOs), now No. 9, and Hernan Marquez (37-4, 26 KOs) who is pushed into the No. 10 spot.  Milan Melindo, who was No. 10, is dropped from the ratings.

Junior flyweight: Nietes stopped Fuentes in nine rounds to become THE RING’s 108-pound Champion. Since Ioka lost at 112 pounds, he will remain No. 2 at 108. With Nietes moving up to Champion status, Randy Petralcorin (21-1-1, 16 KOs) will move into the ratings at No. 10. The new junior flyweight rankings:

Champion: Donnie Nietes, 33-1-4, 19 KOs.

1. Johnriel Casimero, 20-2, 12 KOs.

2. Kazuto Ioka, 14-1, 9 KOs.

3. Moises Fuentes, 19-2-1, 10 KOs.

4. Naoya Inoue, 6-0, 5 KOs.

5. Adrian Hernandez, 29-3-1, 18 KOs

6. Pedro Guevara, 21-1-1, 14 KOs

7. Felix Alvarado, 18-1, 15 KOs

8. Alberto Rossel, 32-8, 13 KOs

9. Takuma Inoue, 2-0

10. Randy Petralcorin, 21-1-1, 16 KOs.

Strawweight:  No. 4-rated Katsunari Takayama (22-6, 10 KOs) defeated unrated Shin Ono by way of a unanimous decision. No change.

Chuck Giampa, the Chairman of THE RING Ratings Committee can be emailed at [email protected]