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Atomweight (also referred to as light minimumweight, junior strawweight, and pinweight) is a weight class in combat sports.


In women's boxing and junior amateur boxing pinweight is, or has been, a weight class for boxers weighing in under 102 pounds (46 kg) (before 2003, 45 kg).

In September 2010 the women's class in amateur boxing was partly merged into an extended 45–48 kg light flyweight division, with women weighing less than 45 kg excluded from competition. Pinweight is still defined for junior contests.

Women's Professional Champions[edit]

Current Champions (Last updated on September 12, 2015)

Sanctioning Body Reign Began Champion Record Defenses
WBA September 16, 2012 Japan Ayaka Miyao 20-5-1 (4KO) 5
WBC September 22, 2018 Czech Republic Fabiana Bytyqi 14-0-1 (4KO) 1
WBO May 17, 2014 Japan Nao Ikeyama 16-3-1 (4KO) 2

Women's Amateur Champions[edit]

year World European
2001 Russia Elena Sabitova France Oria Mahmoud
2002 India Mary Kom
2003 Romania Camelia Negrea
2004 Russia Elena Sabitova
2005 India Mary Kom Russia Elena Sabitova
2006 India Mary Kom Romania Steluta Duta
2007 Romania Steluta Duta
2008 India Mary Kom
2009 Russia Svetlana Gnevanova

Mixed Martial Arts[edit]

The atomweight division in mixed martial arts generally refers to competitors weighing less than 105 lb.

See also[edit]


External links[edit]