Knowing that I frequent this place where any golf related query can be answered, a friend of mine asked me to explain the following. It stumped me so....
He hasn't played in a Q comp for years but had a H/C of 5 which he was happy to keep (suited his ego

). With WHS coming up he decided to put some general play cards in for rounds at his and one other club, 3 in total. He got this. His round of 9th Sept was used for WHS index change but his round of 11th, although 10 over par, saw a reduction to his WHS Index to 2.9. Is it correct please, and can you explain it in terms that a nomad like me can understand.
Sorry about the vertical formatting, it's as he pinged it across to me.
TIA
Played
Marker
Crse Rating
Slope
Adj Gross
PCC
Score Diff
WHS Index
Course Hdcp
11/09/2020
White
69.4
130
79
0
8.3
2.9
3
09/09/2020
White
69.4
130
75
0
4.9 @
5.0
6
04/09/2020
White
72.8
134
83
0
8.6
5.0
6