MMA Junkie analyst Dan Tom goes in-depth to break down the biggest fights in the UFC. Today, he takes a closer look at the UFC Fight Night 257 main event between Johnny Walker and Zhang Mingyang. The main event in Shanghai features a pairing of two light heavyweights who are very familiar with violence.

After a successful UFC 319 that saw Khamzat Chimaev become the UFC middleweight champion, the show goes on, and it's the light heavyweights who now

Johnny Walker remains a constant in the UFC Light Heavyweight division, seven years after making his debut for the promotion. The six-foot-five Brazilian fighter earned his spot in the promotion through Dana White’s Contender Series and has made the most of his opportunity with a long career in the UFC.

Johnny Walker (right) will face a tough test in the surging Mingyang Zhang. | 📷: Getty/UFC While Johnny Walker has answered adversity's demands before, more than two years have passed since he posted a victory.

Johnny Walker will look to get back in the win column when he takes on Zhang Mingyang in the main event of UFC Shanghai on Saturday. Walker is in dire need of a victory as he's been winless in his last three fights.

The ‘Mountain Tiger’ Zhang Mingyang will aim to continue his epic winning run when he faces Johnny Walker in the light heavyweight main event of a UFC Fight Night, set for the Shanghai Indoor Stadium on Saturday afternoon.