A loss of one match in APA isn't going to drop you a skill level unless you are a new player. I am sure that your skill level isn't as great as you thought.
I am 68 and a 7 in 8 ball and another player on my team is a 6. Due to the make up of our team only one of us can play per night. I have been trying to drop by losing some :wink: and the captain talked to the LO about it and was told no way because of all of the games that I have played. I pleaded old age is slowing me down and he just laughed.
I think old age is just a excuse for losing the desire to play as much as you use to. If you played as much as you wanted to when you were younger you would still improve.