# Zero-One United States Heavyweight Championship

The Zero-One United States Heavyweight Championship was a professional wrestling title in Japanese promotion Pro Wrestling Zero1. It was created on January 6, 2003, with Steve Corino defeating Masato Tanaka. In addition to Japan, it has recently been frequently defended in various independent companies in the United States.
The title was created at a time when the company was known as Pro Wrestling Zero-One, originally naming it the Zero-One United States Heavyweight Championship; on July 4, 2004, following Zero-One joining the National Wrestling Alliance (NWA), the title was renamed the NWA/Zero-One United States Heavyweight Championship. On October 26, 2004, Zero-One left the NWA, removing its initials from the title and renaming it the Zero-One United States Openweight Championship. When the promotion's name was changed to Zero1-Max in 2005, the championship title followed. On March 25, 2007, the title again switched its name, this time to the Zero1-Max International Championship; however, on June 13, 2007, the International title was apparently stricken from the record, and was reverted to the US title. On April 12, 2008, it was renamed back to its original title by Steve Corino, in honor of Zero1-Max's late founder Shinya Hashimoto. There have been a total of 11 recognized champions who have had a combined 18 official reigns.

## Title history
### Names

| Name | Years |
| NWA/Zero-One United States Heavyweight Championship | July 9, 2004 – October 31, 2004 |
| Zero-One United States Openweight Championship | October 31, 2004 – 2005 |
| Zero1-Max United States Openweight Championship | 2005 – April 12, 2008 |
| Zero-One United States Heavyweight Championship | January 6, 2003 - July 4, 2004 April 12, 2008 – January 2009 |

### Reigns

Key :
| No. | Overall reign number |
| Reign | Reign number for the specific champion |
| Days | Number of days held |
| <1 | Reign lasted less than a day |
| No. | Champion | Championship change | Championship change | Championship change | Reign statistics | Reign statistics | Notes | Ref. |
| No. | Champion | Date | Event | Location | Reign | Days | Notes | Ref. |
| 1 | Steve Corino | January 6, 2003 | Fighting Illusion – Night 2 | Tokyo, Japan | 1 | 179 | Defeated Masa Tanaka to win the inaugural championship. | |
| 2 | The Predator | July 4, 2003 | 01 Storm 2003 – Night 6 | Niigata, Japan | 1 | 37 | | |
| 3 | Hulk Ogan | August 10, 2003 | 01 World in Nagoya | Nagoya, Japan | 1 | <1 | | |
| — | Vacated | August 10, 2003 | — | — | — | — | Stripped by NWA president Howard Brody due to the match not being officially scheduled. | |
| 4 | The Predator | October 13, 2003 | N/A | Fukuoka, Japan | 2 | 228 | Defeated Mike Knox to win the vacant title. | |
| 5 | Kohei Sato | July 9, 2004 | Rally of the Cage 2004 – Night 1 | Tokyo, Japan | 1 | 125 | This was a steel cage match. | |
| 6 | Steve Corino | November 11, 2004 | Enormous 2004 – Night 1 | Tokyo, Japan | 2 | 79 | | |
| — | Vacated | January 30, 2005 | — | — | — | — | Vacated so Corino could focus on winning the AWA World Heavyweight Championship. | |
| 7 | Leonardo Spanky | March 23, 2005 | N/A | Hakodate, Japan | 1 | 161 | Defeated Ryouji Sai on the Strong Wind & Thunder tour. | |
| — | Vacated | August 31, 2005 | — | — | — | — | Vacated due to Spanky leaving the company. | |
| 8 | Alex Shelley | September 19, 2005 | You Can Do Your Best! Nachiro Hosikawa Charity Show | Tokyo, Japan | 1 | 65 | Defeated Sonjay Dutt to win the vacant title. | |
| 9 | Christopher Daniels | November 23, 2005 | Max Around 2005 – Night 6 | Tokyo, Japan | 1 | 162 | This was a three way match also involving Sonjay Dutt. | |
| — | Vacated | May 4, 2006 | — | — | — | — | Vacated due to inactivity. | |
| 10 | Ricky Landell | June 13, 2007 | N/A | Indianapolis, Indiana | 1 | 205 | Defeats Zach Gowen to win the vacant title. | |
| 11 | Mr. Wrestling 3 | January 4, 2008 | N/A | Valdosta, Georgia | 3 | 64 | Won the title by forfeit when Landell refused to defend it; Landell continues to be recognized by AWA Superstars of Wrestling until March 29, 2008. | |
| 12 | Sterling James Keenan | March 8, 2008 | Devil Bhudakahn Memorial Show | Munhall, Pennsylvania | 1 | 7 | | |
| 13 | Dr. X | March 15, 2008 | N/A | Morganville, New Jersey | 1 | 28 | | |
| 14 | Jake Manning | April 12, 2008 | CWA Final Conflict | York, South Carolina | 1 | 27 | | |
| 15 | Sterling James Keenan | May 9, 2008 | 3KWrestling New Revolution | Limerick, Pennsylvania | 2 | 23 | This match was also for the 1PW World Heavyweight Championship. | |
| 16 | Ricky Landell | June 1, 2008 | 3KWrestling Dojo Challenge 2 | Limerick, Pennsylvania | 2 | 82 | | |
| 17 | King Kaluha | August 22, 2008 | 3KWrestling Summertime Blues | Limerick, Pennsylvania | 1 | 79 | | |
| 18 | Mr. Wrestling 3 | November 9, 2008 | N/A | Rochester, Minnesota | 4 | – | | |
| — | Vacated | January 2009 | — | — | — | — | The actual retirement date is disputed. | |