The place the 30-under victory by Dustin Johnson ranks among the many high performances in Tour historical past.Dustin Johnson’s 11-stroke victory eventually week’s Northern Belief was clearly exceptional. However how exceptional was it from a historic perspective? What number of, if any, higher single event performances have been authored in PGA Tour historical past?As regular, the Tour file e-book – seasoned with a little bit of math – gives solutions. They’re not full solutions, however they do assist to place Johnson’s 30-under week in some significant perspective.Let’s begin with the quick time period. Each by rating, margin of victory, and normal deviation – the highest instrument for measuring exceptionality – Dustin Johnson’s week was one of the best loved by any PGA Tour participant this season.The 30-under by Dustin Johnson set the season-high for strokes below par beforehand held by Andrew Landry in successful the American Specific at 26-under again in January.His 11-stroke benefit over runner-up Harris English additionally bettered the season’s earlier largest margin of victory, six strokes by Joaquin Niemann on the first occasion, the Navy Tribute on the Greenbrier. Niemann completed that far forward of runner-up Tom Hoge.In doing so, Niemann had additionally set the season normal for one of the best normal deviation from the sphere. On the Greenbrier, he was 3.61 normal deviations superior to the sphere of gamers finishing 4 rounds. In Boston, Dustin Johnson beat the four-round area common by 4.09 normal deviations.By any of these measures, it’s attainable to seek out historic precedents that exceed Johnson’s week. However you to do some digging.The PGA Tour file e-book identifies 15 gamers who’ve received a event by margins exceeding Dustin Johnson’s 11 strokes…none, by the way in which since 2006. Phil Mickelson was the final to take action, claiming that season’s Bell South Basic by 13 over Jose Maria Olazabal.Mickelson shot rounds of 63-65-67-65 over the par 72 Duluth, Ga. Format, ending at 28-under. That put him 4.54 normal deviations forward of the sphere, making it essentially the most dominant one-week efficiency for which now we have full information in Tour historical past.An ordinary deviation is an outstanding instrument for measuring dominance as a result of it normalizes all the mandatory week-to-week changes – in course format, area power, gear, climate, and the like – that will in any other case make significant cross-time comparisons of golf outcomes nigh onto unattainable.Among the many successful margins that have been bigger than Johnson’s, definitely the 2 most memorable are these authored by Tiger Woods: his 15-stroke victory on the 2000 U.S. Open at Pebble Seaside and his 12-stroke win on the 1997 Masters.Woods’ 2000 U.S. Open win at Pebble Seaside got here by a margin of 4.34 normal deviations forward of the sphere, making it barely superior to Johnson’s week. When Tiger received the 1997 Masters, he did so by a margin of three.20 normal deviations. That’s additionally glorious, however not as glorious as Johnson.The file for margin of victory is 16 strokes. It’s been achieved 4 occasions, though not since Bobby Locke on the 1948 Chicago Victory Open. The others have been J Douglas Edgar on the 1919 Canadian Open, Joe Kirkwood Sr. on the 1924 Corpus Christi Open, and Sam Snead on the 1936 West Virginia Closed Professional.PGA efficiency information are solely partial previous to 1970, however it’s attainable to comparatively assess a kind of 16-stroke margins relative to Dustin Johnson by use of newspaper information. When he received the 1948 Chicago Victory Open at Midlothian Nation Membership, Locke shot an 18-under par 266 to beat Ellsworth Vines by that 16-stroke margin.The sphere common that week on the par 71 format was 293.61, with a gaping normal deviation of 9.75 strokes. That left Locke simply 2.83 normal deviations forward of the sphere.The huge normal deviation – practically double the usual deviation on the Northern Belief final week – suggests a largely non-competitive area whose relative weak point tempers the passion which may usually construct round any person going as little as Locke did. Dustin Johnson, against this, reigned over a far deeper, stronger area.On the 1975 Phoenix Open, Johnny Miller shot 67-61-68-64 for a four-round complete of 260 that was 14 strokes higher than Jerry Heard’s runner-up 274. Miller completed 4.41 normal deviations forward of the sphere, essentially the most dominant efficiency for which now we have a file since Locke’s 1948 win on the Victory Open.Jose Maria Olazabal shot 262 to win the 1990 NEC World Sequence by a dozen strokes. However that was a limited-field occasion, and on account of lack of depth, these have a tendency to provide much less aggressive fields. Certainly, though Olazabal’s successful margin on the 1990 NEC was one stroke greater than Johnson’s on the Northern Belief, the usual deviation of his week was simply 3.94, making it fractionally much less spectacular.When it comes to uncooked rating, the one two different 30-unders on file have been by Ernie Els and Jordan Spieth on the 2003 and 2016 Tournaments of Champions. Once more, although, the impressiveness of each is tempered by the small area measurement. Els’ win solely translated to 2.64 normal deviations higher than his friends, whereas Spieth rose solely to 2.52. Subsequent: Northern Belief: Dustin Johnson continues curler coaster season Right here’s the underside line. Dustin Johnson’s win may not have been essentially the most traditionally dominant on Tour, but it surely’s within the dialogue.