On Saturday in Newcastle, undisputed boxing champion Savannah Marshall had a successful MMA debut after finishing her opponent in the very first round .
After the win, Marshall said she wanted former boxing opponent Claressa Shields under full MMA rules.
The PFL called up Shields, who had been rooting for and even yelling instructions to Marshall from her seat, for a friendly faceoff.
In the cage, Shields joked with Marshall that she "looked worse than I did" in her first MMA fight. No fight date or location was announced for their matchup yet.
Live on DAZN: Juan Francisco Estrada vs. Jesse "Bam" Rodriguez on June 29. Click here for details .