Ahead of today's start of the BoyleSports World Grand Prix, PDC stats analyst Christopher Kempf has ranked all 32 players by their 2020 double accuracy and their 2015-19 World Grand Prix double-start success.
While all other events focus on 180s and high finishes, the World Grand Prix is different. Players attract attention not for how many doubles they hit, but rather for how many they miss, with the stress on players mounting with every wayward dart.
No other tournament on the calendar attracts as much attention to the beginnings of legs, and over the past five years, the undisputed kings of doubling-in have been Daryl Gurney and Mensur Suljović.
Their track record in the first visits of legs in the tournament is especially noteworthy for their preference of doubles other than the standard D20 - Gurney prefers D16, Suljović D14.
Although these choices make a nine-dart finish impossible, they have yielded good results in winning matches. Gurney has a 10-5 winning record over his past five appearances in Dublin, and Suljović is 9-5, having reached more semi-finals in the Grand Prix than in any other tournament.
With a starting double accuracy rate of nearly 50%, their opponents can expect to see them miss their first three darts in a leg only about 13% of the time.
However, the Austrian number one has attempted D14 only 17 times in stage matches this year and while he is likely to continue attempting a double that has worked so well for him in the past, his 24% accuracy on that double does not bode well for continuing the trend of excellent beginnings to legs.
On the other hand, Gurney's 47.4% finishing double accuracy on D16 in 2020 indicates that Joe Cullen, his first round opponent, can not expect to be running away with many legs.
Historically, this has been a weak event for Gerwyn Price, even as his doubles accuracy improved year-on-year in the second half of the 2010s, he remained unable to hit his D20s.
Last year, the world number three averaged just 79.69 and hit 25.5% of his doubles, but then proceeded to reach the semi-finals of the next five ranking TV events.
Similarly, the indomitable James Wade has disappointed since losing the 2014 final to Michael van Gerwen - he has one win and five losses in his appearances since, and only 35.6% doubles hit successfully to start.
Wade is above 40% accuracy on his enduring favourite, double 10, in 2020 - but even this is far below his recent years' output of legs won on that double.
Gurney's double-to-start percentage of 56.6% in his 2017 Grand Prix title campaign has yet to be equalled; while Michael van Gerwen put forth a respectable 46.1% in 2018, that percentage had fallen to 39.2% by the end of his title defence against Dave Chisnall.
Thus far in 2020 MvG has shown no sign of returning to the form which saw him romp to the title in 2016 - his accuracy on his preferred starting double (tops) so far this year has only been 37.4%.
Compare that to Peter Wright's 47.3% on D20 or Price's 43.1% on tops and MvG's disadvantage relative to the more in-form players becomes apparent.
The debutant player with the highest observed doubles percentage of 2020 is José de Sousa, who has been truly outstanding on double 20, hitting a majority of his attempted targets (admittedly on a small sample size).
His first round match pits him against the hottest property in darts at the moment, Devon Petersen, fresh off his Euro Tour triumph in Germany.
However, hitting doubles has been the aspect of Petersen's game that has lagged behind his stunning increase in rate of 180s and overall scoring; even in his superb tournament run in Hildesheim, he only hit 39 out of 100 doubles.
From the World Championship onward, his overall accuracy on doubles has amounted to only 37%, and on double 20 (excluding Home Tour events) his percentage is below 30.
This will be a good test for the longevity of Petersen's run of success in major tournaments - his ability to suddenly shore up his doubles will determine whether he can meet the expectations of many fans who anticipate a deep run from Devon into the tournament.
Could this be the year for Mervyn King to finally claim a televised PDC ranking event? With 44.4% on his favourite, D16, and 43.5% overall in 2020, this may be his best chance.
Or perhaps a rough debut year for Jonny Clayton or Krzysztof Ratajski is enough to inure them to the complex and chaotic event - both players are near the top of the PDC for their 2020 finishing doubles.
The opening round of the World Grand Prix is short and volatile enough that any player who can keep up his starting or finishing double percentage can easily upend the whole tournament.
Follow Christopher on Twitter @ochepedia.