UFC 281 Countdown previews the strawweight co-main event title matchup between current division queen Carla Esparza and former champ Zhang Weili who is on a mission to regain the title. Esparza (19-6) is the two-time strawweight champion. This weekend’s fight against Weili (22-3) will be the first title defense of her second reign. Esparza is riding a six-fight winning streak and is coming off her second win over former titleholder Rose Namajunas .