James Dielhenn Senior Boxing Journalist @JamesDielhenn 2:45 Katie Taylor is wary of the threat posed by Miriam Gutierrez Yorkshire’s Harper is defending her WBC super-featherweight title on Saturday night against Katharina Thanderz.But she has been targeted all week on social media by Mikaela Mayer, an unbeaten US Olympian who owns the WBO belt in the same division.“With Terri the aim is to unify and be undisputed,” Hearn said.Harper threw down the gauntlet: “This is only the beginning for me. I want to get out there and fight the other champions, the best in my division.”Mayer has been goading: “She’s just not ready to be holding that belt.“Inexperienced champ. Inexperienced and champ don’t go together.“Boxing is entertainment at the end of the day so why are we so caught up on protecting our record. Let’s party.”The WBA champion in the same division, Hyun Mi Choi, has been signed up by Matchroom Boxing so is a viable opponent for Harper too.But after only drawing her previous fight with Jonas, that is a fight that could be revisited.“The public and fans would like to see the rematch,” Hearn said.Will Rachel Ball remain on the rise? – Advertisement – Eddie Hearn says the gap between men and women’s boxing is closing 5:17 – Advertisement – Eddie Hearn says the gap between men and women’s boxing is closing Katie Taylor will have more history-making opportunities to fight MMA rivals or unbeaten Americans if she comes through her latest world title defence tonight.Taylor’s undisputed lightweight championship is on the line against Miriam Gutierrez on Saturday night, live on Sky Sports, with WBC super-featherweight champion Terri Harper and Rachel Ball also on the bill at Wembley Arena.The esteemed career of pioneer Taylor has seen her win five amateur world titles, the 2012 Olympics gold medal, every major belt at lightweight and a super-lightweight title too.