MMA fight on Wednesday night. The two-time Olympic champion takes on Abigail Montes in the Professional Fighters League having previously won her MMA debut with a third round stoppage.Shields will return to the boxing ring in December when she makes her UK debut and shares the card with her rival Savannah Marshall.The American three-weight world champion holds the distinction of being the only fighter ever, male or female, to simultaneously hold all four belts in more than one division.Shields has previously said it would be "disrespect" for a fighter with her achievements to be on the undercard of one of YouTuber turned boxer Paul's fights.Having been asked about her past comments, Shields told Sky Sports: "I don't know what world people.
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