A current WWE champion suddenly tapped out during a show tonight. This happened moments after she issued an open challenge.Blake Monroe has been put in a top spot in NXT ever since she arrived in the black and silver brand. She was involved in a major feud with Jordynne Grace. Following this, she turned her attention to Sol Ruca and the NXT Women's North American Championship. Blake won the title at NXT Halloween Havoc and has already competed in one title defense. At Deadline, Blake informed Ava that she wanted to issue an open challenge this week, and the NXT GM approved it.Tonight on WWE NXT, Blake Monroe came out to the ring and issued her open challenge. To her surprise, several women from the locker room came out to challenge her. This allowed Thea Hail to jump on her from behind and lock in the Kimura lock, causing the Women's North American Champion to tap out. Although it wasn't an official match, this is a big deal for Thea Hail because she just made a current champion tap out.WWE star Blake Monroe responded to Mina Shirakawa's heartbreaking confessionMina Shirakawa and Blake Monroe have a lot of history together, dating back to their time in Stardom. When they were part of AEW, they formed an alliance and continued their friendship until Blake betrayed Mina. Recently, Shirakawa took to Instagram to say she was shattered to have lost her best friend this year. This could mean that she is either referencing Monroe's betrayal during their feud or Blake leaving AEW for WWE.The NXT star responded to Mina Shirakawa and let her friend know that she misses her too."Miss you too..," wrote MonroeIt will be interesting to see if Thea Hail will receive the next title shot after making Blake Monroe tap out.