Most modern poker players opt for an aggressive style, but this month we look at one of the ‘old school’ players, Dan Harrington. The somewhat ironically nicknamed ‘Action Dan’ won the WSOP main event in 1995 and, crucially, made return trips to the final table in both 2003 and 2004, despite having a super-tight reputation.

He’s just as well known for his strategy books. The publication of Harrington on Hold’em volumes 1 and 2 in 2005 brought a whole raft of new phrases into the poker lexicon, such as ‘continuation’ and ‘probe’ bets, ‘inflection points’ and ‘green’ through ‘red’ zones, as he put the game under the microscope in what are now considered to be definitive texts.