After an energetic opening ceremony, the challenge begins for our athletes at the Rio Olympics as we prepare to cheer on Team GB.

Seeing who will take home the gold makes for thrilling viewing — and so does drama.

Things don't always go to plan for the world's best and brightest — frayed tempers, injuries and event protesters can cause havoc during the games.

We've taken a look at some of the best worst moments in the Olympics in recent years — do you remember these nail-biting moments?

Olympic Champion Angel Matos’ kick to referee’s face

Taekwondo, 2008 Beijing Olympics

It would be an act which would leave 2000 Gold medailst Angel Matos banned for life by the World Taekwondo Federation.

Matos did the absolute unthinkable in the 2008 Beijing Olympic Games when he kicked Swedish referee Chakir Chelbat in the face after he had been disqualified for taking too long of a break when he nursed an injury.

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After his opponent Arman Chilmanov was declared winner in the Bronze medal 80+kg class match, the Cuban argued with officials before lashing out in Bruce Lee-like fashion.

Security had to escort Matos out as he continued to push and spit around the arena, and along with his coach Leudis Gonzales, he was ejected from the event before his records were erased at the the 2008 Games.

To add even more insult to injury for the referee, the crowd actually cheered Matos for his actions because the officiating was that bad, before former Cuba president Fidel Castro believed the referee’s were bribed saying, “judges blatantly stole fights from Cuban boxers”.

Derek Redmond pulled muscle

1992 Barcelona Olympics

In what’s become one of the most iconic footage of modern Olympics, Derek Redmond’s hamstring in the 400 metre semi-final is as heartwarming of a story as it is heartbreaking.

Redmond headed into the Olympics in good form, and having set the fastest time in the first round before he won his quarter-final, the Buckinghamshire born athelete fancied his chances of finally adding an Olympic gold medal to his name after he’d previously won gold in the Commonwealth, European and World Championships.

But in the 400 metre semi-final his hamstring tore mid race, forcing him to fall to the track in absolute agony and leave his dream to fade away.

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In one of those movie gone wrong scenes and after a dramatic few seconds, Redmond began to hobble around the race track as he was determined to finish the race.

As he approached the final 100 metres, Redmond’s father Jim forced his way past security to help his son as he cried with pain on to his shoulders to cross the fiinishng line.

The images continue to get played even today, and it gave an incredible father-son relationship story to write about for a life time.

Byun Jung-il refusal to leave the ring

1988 Seoul Olympics

Nobody likes losing. Especially not at the Olympics. But there’s one man whose sore losing overshadows almost anyone in the sporting history books.

That man goes by the name of Byun Jong Il. The boxer from South Korea went on the mother of all tantrums after he lost in a bantamweight bout against Alexander Hristov of Bulgaria.

Byun was frustrated that the referee Keith Walker repeatedly penalized him for head butting and the deductions resulted in Hristov winning the fight.

Then all hell broke loose in the ring.

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Arms were swung, bottles were thrown and chairs were launched as Walker just about escaped any injury before getting on the next plane back to his nativeland New Zealand, and even when the dust started to settle Byun simply refused to leave the ring.

Officials in the end gave up on the boxer and turned off the lights as Byun sat in the ring sobbing for a staggering total of 67 minutes.

Irish Priest tackles Vanderlei de Lima

Athens 2004

It really does look as though this was taken off Father Ted. But even the genius writers from the Irish-hit comedy probably couldn’t write anything like this.

Brazlian runner Vanderlei de Lima was attempting to become the first of his country to win an Olympic gold medal in the marathon, and he was right on course to do this as he approached the 22 mile mark with a sizeable gap ahead of the rest.

But then came Cornelius Horan, a defrocked Irish Priest who just a year earlier disrupted the British Grand Prix, as he ran on to the course with his sign that ‘the end of the world is near’.

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The incident took around 15-20 valuable seconds from the Brazilian runner and in that time he was passed by Stefano Baldini of Italy and Mebrahtom Keflezighi of the USA; both men who would finish above De Lima.

De Lima did win a bronze medal for his efforts, and he would later receive a medal for his sportsmanship, but that wasn’t until after the Brazilian Athletic Confederation appealed at lengths to ask for a gold medal as he would have probably won the race hadn’t it been for the Irishman.

De Lima, though, has since stated that his bronze medal represents gold, whilst Horan would later be arrested during the World Cup in 2006 before appearing on Britain's Got Talent in 2009.