Question: When was the Northern Irish professional snooker player on which "The Rack Pack" focused on his rivalry born? 

Context paragraphs:
Alex Higgins: Alexander Gordon "Alex" Higgins (18 March 1949 – 24 July 2010) was a Northern Irish professional snooker player, who is remembered as one of the most iconic figures in the game.  Nicknamed Hurricane Higgins because of his fast play, he was World Champion in 1972 and 1982, and runner-up in 1976 and 1980.  He won the UK Championship in 1983 and the Masters in 1978 and 1981, making him one of ten players to have completed snooker's Triple Crown.  He was also World Doubles champion with Jimmy White in 1984, and won the World Cup three times with the All-Ireland team.

Khaled Belaid Abumdas: Khaled Belaid Abumdas (born 20 January 1987), also spelled Khalid, is a Libyan former professional snooker player.  He is the first professional snooker player from Libya, competing on the main tour between 2013 and 2015.

Ahmed Saif: Ahmed Saif (born 1 January 1983) is a former Qatari professional snooker player.  He is the first professional snooker player from Qatar.  Unusually, for a left-handed player, he uses the rest right-handed.

The Rack Pack: The Rack Pack is a 2016 British comedy-drama television film about professional snooker during the 1970s through the 1980s, focusing on the intense rivalry between Alex Higgins and Steve Davis.  The film is directed by Brian Welsh and was released on BBC iPlayer on 17 January 2016.

Gerard Greene: Gerard Eamonn Greene (born 12 November 1973 in Chatham, Kent, South East England) is a Northern Irish professional snooker player.  He represented Northern Ireland in international events, as his parents are from Belfast.

Mark Allen (snooker player): Mark Allen (born 22 February 1986) is a Northern Irish professional snooker player.  He won the World Amateur Championship in 2004.  The following year he entered the Main Tour and took only three seasons to reach the elite top 16.  As a prolific break-builder, Allen has compiled more than 300 century breaks in professional competition.

Ross Muir: Ross Muir (born 6 October 1995 in Edinburgh) is a Scottish professional snooker player.  He is noted for being the only professional snooker player who regularly wears a glove on the bridge hand, Muir turned professional in 2013 after graduating from event two of the Q School, defeating David Morris 4–0 in the final round.

Hossein Vafaei: Hossein Vafaei (Persian: حسین وفایی ایوری‎ ‎ , born September 14, 1994 in Abadan, Iran) is an Iranian professional snooker player.  He was the first Iranian professional snooker player in the history of the game.  His attempts to travel to the United Kingdom to qualify for the major tournaments on the snooker calendar were denied due to visa problems, but he gained a UK visa in February 2015.

Alexander Ursenbacher: Alexander Ursenbacher (born 26 April 1996) is a Swiss professional snooker player from Rheinfelden.  He is Switzerland's second professional snooker player after Darren Paris, who competed on the main tour in the mid-1990s.  He is current Under-21 European Snooker Champion.

Manish Jain: Manish Jain (born 25 August 1988) is an Indian Billiards and Snooker player.  Manish started his career in 2004 after being Ranked 2nd at the West Bengal State Junior Billiards Championship and Ranked 3rd in the Snooker Championship.  In 2005 he represented West Bengal in the National Billiards & Snooker Championship at the Goregaon Sports Club, Mumbai.  In 2006 he represented West Bengal in the National Billiards & Snooker Championship at Vijaya Mehal Chennai.In 2007 he Represented West Bengal in the National Billiards & Snooker Championship at Hyderabad and Ranked 2nd In Billiards & Snooker both in India.  He also won the State Junior Snooker Championship in 2007 and Ranked2nd in the State Senior Snooker Championship at West Bengal.  In 2008 Manish represented India at the Asian U-21Snooker Championship held at Yangon,Myanmar.  In 2008 he won the State Junior Snooker & Billiards Championship both held at the Bengal Rowing Club.  In 2009 he represented India in the Asian U-21 Snooker Championship at Pune.  In 2010 Manish joined Eastern Railways under Sports Quota to become a full time professional in Billiards & Snooker.  In 2011 he Represented India in the World Sooker Q- School.  He also won the State Snooker Championship at the Bengal Rowing Club.He also represented India in the World Professional Billiards Championship at Leeds, U.K.  In 2012 he won the State Senior Billiards Championship at the Bengal Rowing Club.  He then went on to represent India in the World Billiards Championship at the Northern Snooker Centre at Leeds, U.K.  He participated in the All India Invitation Billiards & Snooker Championship, Baroda and Beat 9 times World Champion Geet Sethi in the Group Stage and Participated.  In 2013 he represented India at the Australian Open Billiards Championship and made it to the Round of 16.  He represented West Bengal in the National Billiards & Snooker Championship at Gwalior and finished Ranked 6th in the National Senior Billiards Championship.  In 2014 he won both the State Billiards & Snooker Championship at the Bengal Rowing Club.  .

Supporting paragraphs: The Rack Pack Alex Higgins
Answer: 18 March 1949