ONE Championship’s Lights Out card goes down on Friday inside the Singapore Indoor Arena, and all signs point to a memorable night of fights. The event will be topped by a pair of long-awaited title fights, as featherweight champion Thanh Le looks for his first defence against BJJ specialist Garry Tonon, and bantamweight king Bibiano Fernandes looks to vanquish UFC veteran John Lineker. Both fights have been booked and postponed several times already, so anticipation could not higher on the eve of fight night. Beyond its championship double-header, ONE: Lights Out will feature several other compelling clashes, including the returns of former featherweight champion Martin Nguyen and former strawweight champion Alex Silva. Keep scrolling for five storylines to watch ahead of the event. Tonon’s journey from BJJ to MMA When Garry Tonon, 30, steps into the Circle with featherweight king Thanh Le in the ONE: Lights Out main event, he’ll be looking to complete an amazing transformation from BJJ champion to MMA champion. After a staggering submission grappling career, the American shifted his focus to MMA. He made his professional debut against Richard Corminal at ONE: Iron Will on March 24, 2018, and a little less than four years later, he is 6-0 in his new sport, and on the cusp of championship glory. Getting by Le (12-2), however, will not be easy. The 36-year-old Vietnamese-American champion will look to counter Tonon’s world-class grappling with a lethal striking game that he has parlayed into a 92 per cent knockout rate. ‘The Flash’ is back Bibiano Fernandes is ONE Championship’s most accomplished champion, but we have not seen him in action since he submitted Kevin Belingon in late 2019. In the ONE: Lights Out co-main event, the bantamweight champion will finally get back to what he does best as he takes on fellow Brazilian John Lineker. Fernandes (24-4) has the skills to beat any fighter on Rarth, but at 41, and with a long lay-off behind him, it is possible he will have lost a step when the cage door closes on Friday. ONE Championship weigh-ins: Bibiano fails hydration, comes in heavy He better hope not, as even the slightest misstep against Lineker (34-9) could lead to disaster. The 31-year-old title challenger, who previously fought in the UFC flyweight and bantamweight divisions, has justified with his “Hands of Stone” nickname with 16 knockout victories. Must-win fight for Martin Nguyen Martin Nguyen has already earned his place in the ONE Championship history books, but the former two-division champion has fallen on tough times. The 33-year-old Vietnamese-Australian (13-5) is riding back-to-back losses, first losing his featherweight title in a knockout loss to Thanh Le, then succumbing to another knockout at the hands of Kim Jae-woong. At this stage, there is no reason to believe the 33-year-old Nguyen’s best days are behind him, but there is no denying he needs a win . Time will tell if he can get that against debuting Ukrainian Kiril Gorobets (11-1) who, while relatively mysterious, is at least good enough to win his last nine fights, contested primarily in Ukraine’s WWFC promotion. Alex Silva’s resurgence Father Time is no match for Alex Silva. At 39 years old the Brazilian former strawweight champion (11-6) is already much more senior than most fighters in his division – and yet he continues to win. When the BJJ black belt steps into the Circle with Indonesia’s Adrian Mattheis (9-5) on the ONE: Lights Out main card, he’ll be looking for his third-straight win after triumphs over Miao Litao and Rene Catalan. A win over Mattheis won’t be enough to earn him another shot at reigning champion Joshua Pacio, whom he lost a decision to in 2020, but it should be enough to put him back in the conversation. Lin Heqin moves to kick-boxing After defeating Bi Nguyen by decision at ONE: Bad Blood in February, China’s Lin Heqin called for a shot at ONE’s atomweight MMA title. “I’m eyeing that championship bout,” she said post-fight. “That’s what I’m going for next.” Instead of holding out for a title shot or taking a fight with another atomweight contender, Lin ultimately elected to make a quick sojourn into kick-boxing competition. She’ll take on Argentina’s Milagros Lopez on the ONE: Full Circle lead card. The fight won’t have much bearing on Lin’s standing in MMA, but it should be a lot of fun.