It's about the Law of the big numbers and the stats being valid from the very start.
Didn't want to fiddle with the individual holes, thus I take the games played from your stats.
3700 RRs x 14 ft = 51800 ft cumulated distance before your notes started.
20 RRs x 6.3 ft = 126 ft, the 20 games being not more than 0.5 % of your games.
51926 / 3720 = 13.9586 ft (new average)
In summary, the average reduces by mere 0.041 ft during these 20 games, hiding deep in the decimals. 550 games of 6.3 ft distance to the hole would move the overall average by 1.00 ft.
But:
You're at 13 feet now!
Congratulations! Cheers! Party!!