Every stroke has a before and after. The video is how they see it.

Elena coaches adults at a club outside Raleigh — league players chasing a better serve, beginners who picked up a racket at forty, retirees defending twenty years of doubles bragging rights. Her lessons run on video: she films a stroke from the baseline, and they watch it together at the net.

The clips used to live and die on her phone. Students would squint at the screen, nod, and ask her to text them the video — which she did, one thread at a time, until the videos were scattered across a hundred conversations and gone when anyone needed them.

Now Elena uploads each lesson’s clips to Solberra before she leaves the court. Students buy their own serve, their own footwork drill, their own winning-day highlight — and keep them somewhere that isn’t a text thread. Progress you can scrub through beats progress you have to remember.