In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

[Q]: Has there ever been more at stake in any mixed martial arts fight? Jose Aldo is the only featherweight champion in UFC history, is undefeated in 10 years, and is ranked as the No 1 pound-for-pound fighter in the world. He couldn't have more to lose. At the same time, Conor McGregor has talked so much and made so many promises that a loss could seriously derail the Irishman's surging hype train and even cut the supply of his huge cash flow. This is the biggest fight in UFC featherweight history and of both of these fighters' careers. They also have the hopes of a nation on their backs, particularly McGregor who will once again bring thousands of travelling Irish with him to Las Vegas.Jose Aldo fights Conor McGregor at the MGM Grand on Saturday nightIt is biggest fight in UFC featherweight history and in both fighters' careersThe fight will be live on BT Sport 2 in the UK at around 3am GMT 
 Question:Both men are undefeated in the UFC with Aldo set to make his eighth title defence and McGregor looking for his sixth knock-out in his seventh _ bout.
[A]: UFC


[Q]: Could the golfing summer be set up any more perfectly? Is there anyone who now doubts we are in at the start of a rivalry that is going to have us pinned to our seats for the next decade? For the first time in the game’s long history the world No 1 and world No 2 hold all four majors between them and the next stop just happens to be — honestly, who is writing these scripts? — the Home of Golf itself. Who’s your money on? Rory McIlroy, the No 1 with all the talent, or Jordan Spieth, the No 2 infused with Texan grit? It is like Roger Federer against Rafael Nadal from a few years ago, only played out in wide open spaces and with smaller balls.Jordan Spieth won the US Open to claim his second major of 2015American and Rory McIlroy currently hold all four majors between themThe pair are set for a showdown at The Open in next major at St Andrews 
 Question:It is hard to imagine anything energising 26-year-old McIlroy more than a 21-year-old invading his territory but in _ he has clearly got the worthiest of adversaries.
[A]: Jordan Spieth


[Q]: Calum Chambers has no regrets about being denied a loan move and insists Arsenal is the best place to learn – even if he isn’t playing. When Chambers arrived at Arsenal in July 2014, he was pitched straight into the action and made an impressive debut in the Community Shield victory over Manchester City. He never looked back and was named the club's first player of the month. By this point of last season, Chambers had made 20 appearances – which totalled 1346 minutes – and been capped three times by England. This season, however, has presented some challenges. Arsene Wenger is turning him from a right-back into a central defender but he wants that transition to take place at the Emirates Stadium. The Arsenal manager would not let Chambers seek a loan in the window but he is not giving him much game time, either. So far Chambers has only been involved in 324 minutes of the campaign.Calum Chambers has struggled for minutes this season at ArsenalArsene Wenger is converting Chambers from a right back to a centre backChambers is not becoming disillusioned at club despite lack of actionHe will start at the heart of England U21's defence against Switzerland 
 Question:One thing of which Chambers is assured is regular games with _'s Under 21s.
[A]:
England