Oh, John   #4735
No. Date Tournament – Course Division Gross Adjusted Rating Slope Diff. Top
1.  6/23/2019 Summer Classic – Springbrook Player 102 96 69.8 126 23.5 #1
2.  4/6/2019 Spring Thaw – Cog Hill #3 Player 94 94 68.9 117 24.2  
Tournament Handicap = 22.5   = ((23.5) / 1 * 0.96)
The USGA procedure for calculating a Handicap Index is described at:
http://www.usga.org/Handicapping/handicap-manual.html#!rule-14389
NIMAGA Tournament Handicap Index uses top 3 of last 6 differentials;
(or top 2 if only 4 differentials or top 1 if only 2 differentials).