A freak injury handed Ryan Burnett the first loss of his professional career and cost him his WBA Bantamweight title as his suffered a fourth round TKO against Nonito Donaire.

Fighting in the World Series of Boxing quarter-finals at The SSE Hydro in Glasgow, Burnett appeared to be in control against Donaire and ahead on points when disaster struck midway through the fourth round.

The Belfast fighter appeared to over-extend himself when he threw a right hook which failed to connect with his opponent and he immediately dropped to one knee, clutching his back.

Burnett took a count before gamely fighting on and managed to survive the final minute of the round, despite having almost zero mobility and being penned in the corner with Donaire unloading on him.

However, having survived to hear the bell, Burnett returned to his corner and following discussions with his team, during which he revealed he couldn’t move his right arm, he failed to emerge for the fifth round.

It was an awful end to an evening which had started so brightly for Burnett as he bounded out of his corner in the first round with real purpose and intent.

Burnett enjoyed plenty of early success with his whip-like left jab and appeared to take the first two rounds thanks to that jab and some clever one-two combinations, which kept Donaire from finding his rhythm.

The Filipino-born four-weight world champ did finish both rounds strongly and may have edged the third but not even he could celebrate the victory afterwards, given the nature of Burnett’s injury, and afterwards he went to sympathise with the Belfast fighter and his corner.

Burnett was in considerable discomfort afterwards and had to be taken out of the ring on a stretcher, while receiving oxygen from medics.

Donaire will take on WBO champion Zolani Tete in the semi-finals in early 2019.

Later, Josh Taylor beat Ryan Martin with a seventh-round stoppage.

The 27-year-old from Prestonpans took his time to get going but when he floored his hitherto unbeaten opponents with a left to the head and a left to the body, referee Victor Loughlin stepped in to call a halt, with two minutes 21 seconds of the round gone.

Taylor, who extended his unbeaten record to 14-0-0 and held on to his WBC Silver championship belt, will take on new IBF super-lightweight champion Ivan Baranchyk in the semi-finals.