Wednesday July 23rd, 2014

The 20th Commonwealth Games begin Wednesday, with an estimated 4,000 athletes participating. The first games were held in 1930 and the 2018 games will be held in Gold Coast, Australia.

Here's what you need to know as the games start:

Location: Glasgow, Scotland

Events: 261 in 18 sports

Nations: 71 nations and territories.

Opening ceremony: July 23

Closing ceremony: August 3 

Venues: Celtic Park (opening ceremony), Hampden Park (closing ceremony)

Television: CBS Sports Network  

Livestream: YouTube is providing some coverage of the games; The BBC will have video and radio streams, plus highlights.

Five Athletes to watch for:

Usain Bolt (Jamaica), relay: Bolt won three golds at the 2012 London Olympics (100 meters, 200 meters, 4×100-meter relay) but is only expected to compete in the relay at the Commonwealth Games.

Mo Farah (England), distance running: Farah won the 5,000 meters and 10,000 meters at the London Olympics, but withdrew from the Games, citing illness. 

Nicola Adams (England), boxing: Won the women's gold medal in the flyweight division in London.

Bradley Wiggins (England), cycling: Wiggins won the 2012 Tour de France.

Sally Pearson (Australia), hurdles: Pearson won gold in the 100-meter hurdles in London.

- Scooby Axson

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