Two rematches headline the Manny Pacquiao vs. Mario Barrios undercard, while former champions and young contenders look to impress. Here's a breakdown of all the action on the Pacquiao vs. Barrios card.

It was a remarkable sight to see boxing legend Manny Pacquiao at the Las Vegas Raiders headquarters as he prepares for his return to the ring. Since relocating to Sin City, the Raiders have consistently demonstrated hospitality toward prominent sports figures.