The top 10 neighbors for PGA Tour form a tightly compressed, golf-specific cluster — seven Athletes, one TV Channel, one Sporting Event, and one TV Personality — with scores spanning only 0.9693 to 0.9846, a range of less than two points.
The shape is flat: no single neighbor pulls away from the pack. Rory McIlroy (0.98) and Jordan Spieth (0.98) sit at the top, separated by a rounding difference, followed closely by Dustin Johnson (0.98), Phil Mickelson (0.98), and Brooks Koepka (0.98). Golf Channel (0.98) is the only non-athlete in the upper tier, and The Masters (0.98) is the only Sporting Event in the top 10. Justin Thomas (0.98) and Jason Day (0.97) round out the Athletes. The lone outlier by subcategory is David Feherty (0.97), a TV Personality — the only neighbor in the top 10 who is neither an Athlete nor a Sporting Event nor a TV Channel.
The composition is almost entirely same-sport: nine of ten neighbors are either professional golfers, a golf-dedicated broadcast channel, or a major golf tournament. The audience shape PGA Tour shares most closely is, in nearly every case, the audience shape of the sport's own players and flagship events.
This uniformity signals a deeply sport-specific audience with little structural overlap bleeding into adjacent entertainment or media categories within the top 10.