Super middleweight contender John Ryder may have won the lottery on Saturday night at the O2 Arena, when he picked up an upset win over Zach Parker to capture the vacant WBO interim-title.

Ryder, who was the betting underdog, was declared the winner after Parker broke his hand and was unable to continue beyond the fourth round.

The victory made Ryder the mandatory challenger to Mexican superstar Saul 'Canelo' Alvarez, who holds the WBO, WBA, WBC, IBF titles at 168-pounds.

Earlier this year, Ryder pulled off another upset with a close twelve round decision over former world champion Daniel Jacobs.

Eddie Hearn, who works with Canelo and promotes Ryder, would love to match them against each other in May of next year at Arsenal’s Emirates Stadium.

Canelo is looking to stay busy with a possible May bout - before pursuing a rematch with WBA light heavyweight champion Dmitry Bivol in September. According to Hearn, Canelo has expressed real interest in fighting on UK soil.

 "I am so pleased for John Ryder. Since he beat Daniel Jacobs, we've been looking for this big fight," Hearn told Matchroom Boxing.

"We didn't expect it to be Zach Parker. He came through and was just too much for Parker, who I think had an injured hand. But he was getting to him and I think he would have stopped him anyway.

"I've already texted [Canelo's trainer and manager] Eddy Reynoso to say 'John Ryder is mandatory, let's go in May at the Emirates'. It would be a dream for Ryder, he deserves it.

"He is a very good fighter and he's the mandatory challenger for Canelo Alvarez. This could be our chance to bring Canelo to the UK, it would be unbelievable. We'll see if we can get it over the line."