Can I just add to the above about this weekend:
When you have scored 0.5 out of 3 up to that point, you don't really expect to find Sunday morning that you have been paired with a player still graded higher than yourself, with your third black in four games
Even more so, when said player is local legend Mike Surtees. After 1e4 e5, he replied 2 a3, and then 3 d3, 4 f4 and 5 c4.......
Normal opening by his standards, then

I actually made a fairly good fight of it, but was ground down in the end.
He disposed of his final round opponent, with the black pieces, in about half an hour

"Set up your attacks so that when the fire is out, it isn't out!" (H N Pillsbury)