Meeting in the Finals [Table Tennis]

We each defend our own half of the court, then meet in the finals.

Reader's guide:

1. A flashy, shameless old rogue top x a beautiful, sweet bottom; seven-year age gap; the world's number one x the future world's number one.

2. I wanted to write a table tennis story in 2021, but I'm a bit of a procrastinator.

Theme: Who knew playing table tennis could be so cool?