While the PGA Tour event currently known as the Arnold Palmer Invitational has been contested at famed Bay Hill Club & Lodge since 1979, the tourney dates back to 1966 when it was called the Florida Citrus Open Invitational.
For the first 13 years of its existence, the tourney was still played in the Orlando area but took place at Rio Pinar Country Club, where "The King" himself won this event in 1971.
Now, if one wanted to get technical, the lowest 72-hole score in this event's storied history actually came at Rio Pinar, as Buddy Allin shot 23-under to win the 1973 edition of the Florida Citrus Open, defeating Charles Coody by eight strokes.
That said, however, as the API has been synonymous with Bay Hill for nearly a half-century now, we're going to focus on the lowest score ever shot at Arnie's Place.
Naturally, one might think the record belongs to Tiger Woods, given the fact that eight of his 82 PGA Tour victories came at Bay Hill, including four in a row from 2000 to 2003.
But that's not the case, although the 15-time major champion is one of three to come within one of the record, shooting 19-under in '03 to win by a record 11 strokes. Fred Couples (1992) and Matt Every (2015) also came within a single shot.
The mark for the lowest score ever shot at the Arnold Palmer Invitational, though, belongs to none other than the late great Payne Stewart.
Payne Stewart owns the record for the lowest 72-hole score ever shot at the Arnold Palmer Invitational at Bay Hill
Coming into the 1987 edition of what was then known as the Hertz Bay Hill Classic, Payne Stewart had just two PGA Tour wins to his name but hadn't hoisted a trophy in nearly three and a half years.
With Bay Hill then playing as a par-71, Stewart got off to a solid start with an opening-round 69, putting him three shots back of the lead, and then got to within one of 36-hole leader David Frost with a second-round 67.
While Frost played well in Saturday's third round with a 6-under 65, Stewart was even better, nearly matching the Bay Hill course record with an 8-under round of 63, giving the 30-year-old a one-stroke lead heading into the final 18 holes.
Frost did his best to stay in the mix with a final-round 67, but Stewart ultimately took a three-shot victory, firing a 6-under 65 to finish at 20-under for the week, thus setting the new 72-hole mark at Bay Hill that still stands to this day.