Filed under: News , UFC , Videos After what then seemed like a victorious octagon debut, UFC Fight Night 100’s Darren Stewart said he wasn’t worried about having his TKO win over Francimar Barroso overturned due to a headbutt. It turned out that Stewart (7-0 MMA, 0-0 UFC) did have cause for concern, as The Comissao Atletica Brasileira de MMA (CABMMA) opted to reverse the outcome of the night’s opening scrap into a no-contest  after Barroso (18-5 MMA, 3-2 UFC) formally appealed ( details of the decision can be found here ). Later that day, Stewart used his Instagram account to voice his frustration with the decision, saying the situation “stinks” and advising fellow fighters to think “very strongly” before accepting to face a Brazilian fighter in Brazil. The English fighter, who missed his son’s second birthday in order to make the trip to Sao Paulo, also took the opportunity to call for a rematch on March 18 – when the UFC is set to return  to The O2  in his hometown of London. “To say I’m disappionted is an understatement,” Stewart posted on Instagram