World number one Lydia Ko hits a hole in one on the eighth hole, which is the second hole in one hit today. Ko is now tied for the second place

Spain's Carolina Marin wins the second game to level up the women's singles final against India's PV Sindhu.

You can watch the final game that will decide the gold over here.

Image source, Getty Images

Former Arsenal maverick Andrey Arshavin has, for reasons that are not quite clear, been asked for his opinion on the doping scandal that has engulfed his native Russia.

"Though it's angered a lot of people, in my opinion, there's doping in all repetitive sports," the 35-year-old told Prosport. , external

"It is simply impossible to succeed without doping. I think everyone dopes." 

Some Arsenal fans might suggest that legal or otherwise he could have done with some serious performance enhancement by the end of his time at the Emirates.

Image source, Getty Images

GB's Nick Skelton has qualified top of the pile for the individual show jumping final, picking up no time or jump penalties. 

Skelton was one of eight riders to produce a clean round and will perform last in Friday's final. 

Fellow Team GB-er Ben Maher also qualified but carries four penalties into the second round having knocked a pole off. 

The actual final-final is at 17:30 BST... 

Stay tuned. 

India's PV Sindhu wins an epic rally to take the first set 21-19 against Spain's Carolina Marin.

Nick Hope
BBC Sport in Rio

"I'm devastated," ex-GB fighter turned Moldovan Olympian Aaron Cook after his shock opening round defeat in Rio.

"I made the switch from GB after the devastation of missing London 2012 and not feeling I had a way back. Moldova gave me a chance and had such high hopes.

"Why did I have a day like that at the Olympics!?" says a forlorn-looking Cook.

"I wanted to put on a show for those who have supported me and win that gold medal, but I just feel I've let everyone down."

It's been a dramatic 50km walk, and now Matej Toth of Slovakia has surged into the lead with two to go. He's passed defending champion Jared Tallent of Australia, who looked to be on course for a second gold in a row in this event.

Image source, Getty Images

Great Britain's Charley Hull opens up her third round with a birdie on the first.

She is now in a share of second with American Stacy Lewis on nine under although South Korean leader Inbee Park has maintained her two-shot advantage as she moves to 11 under with a birdie of her own. 

Aimee Lewis
BBC Sport in Rio

Aaron Cook, British born but representing Moldova after not being selected for London 2012, has lost in the last-16 to Liu Wei-Ting, which means there is no chance of a humdinger of a final between Cook and Lutalo Muhammad, the London 2012 bronze medallist and the man preferred to Cook four years ago. Muhammad, of course, won earlier and is safely through to the quarter-finals, where he will take on American Steven Lopez. 

Image source, .

A massive shock on the taekwondo matt as former Great Britain player Aaron Cook - now representing Moldova - comes a cropper with a comprehensive 14-2 defeat to Chinese Taipei's Liu Wei-Ting.

Cook's hopes of gold are gone. He cannot now meet British rival Lutalo Muhammad in the final. There is a slight chance that the pair could meet in the repechage round however. 

BBC Sport's Jess Creighton ran into Estonia's marathon running triplets Liina, Lily & Leina Luik during her roam around Rio.

There seems to be a strong athlete/journalist divide in the best way to wear a lanyard.

Image source, AP

And even if you don't know much about wrestling, you will enjoy this celebration.

Everyone has wanted to do this to their PE teacher at some point...

Aimee Lewis
BBC Sport in Rio

Image source, .

Wrestling. A funny sport, mainly because I'm not quite sure of what's going on. It reminds me of when my brother and I would grapple as kids, but without the screaming and crying. Obviously, there is a greater skill to it than that. 

It's a vocal crowd in the arena, two bouts taking place simultaneously so there are plenty to cheer for. But my time here must be brief as, next door, Aaron Cook will soon fight in the men's -80kg in taekwondo. 

You keep moving Aimee, grapple fans step this way for all the freestyle action.

The leaders are under way in round three, with Britain's Charley Hull finding the middle of the fairway with her opening drive. The 20-year-old from Kettering is on eight under par, one behind American Stacy Lewis and two behind leader Inbee Park of South Korea.

Denmark's Viktor Axelsen performs a successful between the legs shot, despite losing semi-final.

Image source, BBC Sport

BMX racing is a young man's game, right? 

Well 68-year-old Paul Mounsey is living proof that you are never too old for it.

Read his story here - and find out about how to get into BMX racing with our cycling guide.

Nick Hope
BBC Sport in Rio

Meet Regys Silva a lawyer from Fontalez, which is about a three-hour flight north of Rio.

Regys simply loves the Olympics and has bought tickets to 13 of the 28 sports on display at the 2016 Games.

"I'm so proud to be here, it is so exciting to see the Olympics in South America for the first time," he tells me.

"Yes there were some worries before the Games but once they began - and with the fantastic opening ceremony - they have been amazing. This is what the Olympics should be about - going to new places around the world and inspiring people."

History is going to be made today at the badminton arena.

Either Spanish world number one Carolina Marin is going to become the first non-Asian woman to win the title. 

Or PV Sindhu will India's first ever badminton gold to become a superstar back home. It would be India's first gold of the Games.

Marin has a 4-2 lead in the first game. Watch here.