Question: Who founded the sport event promotions company that devises the non-ranking snooker tournament Championship League?

Context paragraphs:
Championship League: Championship League is a non-ranking snooker tournament, devised by Matchroom Sport.  All tournaments have been held at the Crondon Park Golf Club since its debut in 2008.  John Higgins is the reigning champion.

2010 Championship League: The 2010 Championship League was a professional non-ranking snooker tournament that was played from 4 January to 25 March 2010 at the Crondon Park Golf Club in Stock, England.

Matchroom Sport: Matchroom Sport is a sport event promotions company led by the founder and owner English entrepreneur Barry Hearn and his son Eddie.  It first came to attention in the sports of snooker and boxing and is also involved in pool, bowling, golf (see PGA EuroPro Tour), fishing, darts, ping pong, and poker and as of late 2016 gymnastics.  The company is based in Brentwood, Essex.

2015 Championship League: The 2015 Championship League was a professional non-ranking snooker tournament that was played from 5 January to 12 February at the Crondon Park Golf Club in Stock, England.

2018 Championship League: The 2018 Championship League is an upcoming professional non-ranking snooker tournament which is due to take place from 22 January to 29 March.  It will be the 11th staging of the tournament.

2009 Championship League: The 2009 Championship League was a professional non-ranking snooker tournament that was played from 5 January to 26 March 2009 at the Crondon Park Golf Club in Stock, England.

2013 Championship League: The 2013 Championship League was a professional non-ranking snooker tournament that was played from 7 January to 21 March 2013 at the Crondon Park Golf Club in Stock, England.

2008 Championship League: The 2008 Championship League was a professional non-ranking snooker tournament that was played from 25 February to 15 May 2008 at the Crondon Park Golf Club in Stock, England.

2012 Championship League: The 2012 Championship League was a professional non-ranking snooker tournament that was played from 9 January to 22 March 2012 at the Crondon Park Golf Club in Stock, England.

2016 Championship League: The 2016 Championship League was a professional non-ranking snooker tournament that was played from 4 January to 3 March at the Crondon Park Golf Club in Stock, England.

Supporting paragraphs: Championship League Matchroom Sport
Answer: Barry Hearn