Choi's career began when she was a little girl, being scouted in North Korea ahead of the 2008 Olympics in China. The plan from the North Korean government was to have her, as a teenager, compete in the Games and look to put their country in the limelight. Those plans were thwarted when female boxing missed out on Beijing and not long afterwards Choi and her family would defect, and end up in Seoul.
In Seoul Choi would have to battle with the prejudices of being from Pyongyang, though did so whilst continuing to box, making her mark on the Korean amateur scene before debuting in 2008, aged 17! Not only did Choi debut at the 17 but, remarkably, she also won a world title on her debut, defeating Chunyan Xu for the WBA Featherweight title, creating history with the win. She would hold that title until until 2013, when she decided to move up in weight and quickly win the "interim" WBA Super Featherweight title. She would later be upgraded to full champion, and has subsequently defended the title a number times so far.
In the ring Choi is a well schooled boxer, with some lovely movement, a lot of very nice straight punches and a good boxing brain. She can fight on the inside, though it's clearly the weakest part of her game and she does prefer to hold rather than have an up and close battle of attrition. From range she's really fantastic but a fighter who can get in her face can give her problems, and she has shown some issues with stamina late in bouts. She also doesn't have fight ending power, which has caused a number of her bouts to go the distance, despite being very 1-sided.
Mexican fighter Gonzalez is much less well established than the Korean, but has had an interesting career. She has competed in a reality TV show, which took place way back in 2011 and did score back-to-back wins over Irma Garcia and Yazmin Rivas, to claim the "interim" WBC female Bantamweight title, which she defended once. Sadly since beating Rivas Gonzalez has gone 2-2-2, suffering losses to Liliana Palmera and a rematch with Yazmin Rivas. She has also fought to Estrella Valverde and Melissa St Vil. She has also moved up from Bantamweight to Super Featherweight in recent times.
In the ring Gonzalez can certainly fight. Her technical skills are limited, and her punches are wide slaps, but she seems happy to have a brawl. Often she fights off the back foot, but can be dragged into a slugfest. In many ways it's the slugging it out that could give Choi problems, but it should be noted that Gonzalez really lacks power, with just a single stoppage win so far. She looks tough, and rugged, but lacks power, speed and sharpness, which she would need to compete against Choi.
What we're expecting to see here is Choi boxing at range, using her natural size advantages and her speed to out box Gonzalez, out manoeuvrer the challenger and and take a wide decision without too many issues. Stylistically Gonzalez looks made to order, with her wide offense and her relative lack of power, and although Choi won't be expected to blast her out, it would be a surprise to see the Korean losing more than a round or two.