GRAPHIC: Mason Cartwright reveals the extent of horrific mouth injury suffered during Darren Tetley fight

Let's make this really, really clear right from the start: WARNING - CONTAINS GRAPHIC FOOTAGE.

Got that? Good. Because trust us, what follows is the sort of thing you don't want to be seeing when you're about to eat your Sunday lunch. Nope. Not one bit. Mason Cartwright saw his chances of claiming the WBO European title disappear in Leeds on Saturday night. Despite having the better of the opening rounds of his fight with Darren Tetley, the fight - arguably the biggest draw on the undercard for Lee Selby's world title defence - was stopped in the ninth round. Tetley had fought back in the two rounds prior to this, opening up a nasty wound to Cartwright's mouth. On the advice of a doctor, the fight was stopped, handing victory to the Yorkshireman. Although Cartwright was clearly disappointed with the outcome, the amount of blood gushing from his lip made it a relatively straightforward decision for the ref. After the fight he insisted via Twitter he would've been willing to continue had the referee not intervened. 'If it was up to me I would have fought the 10th round all day [to] show my boxing ability,' Cartwright's tweet explained.  'I’ll be back,' he vowed. Accompanying these words, he also shared video footage which revealed the extent of the injury he suffered. Again, before you even consider pressing the play button, let us remind you that this is not for the squeamish... https://twitter.com/masoncartwright/status/997984907543613442?s=12 See what we mean? A whole new meaning to a 'split lip'.We can safely say he probably needed a stitch or two. The main event at Elland Road saw Selby lose his IBF world featherweight title to Josh Warrington, bringing to an end his three-year reign. The fight went the distance, with Warrington eventually announced as the champion following split decision.