Didn’t the tournament get canceled before diamonds really took over?
For the first 15-20 years or so the Sands Regency in Reno was two tournaments a year. Early-mid June and then early-mid December. I think the last few years it was just one a year.
But I've checked and the Diamond table was used in the 2001 US Open. At least it was when Corey Deuel beat Mika Immonen 11-0 in the finals that year.
Fingers are crossed Jay chimes in.
