Usually on my heavy lower body days, I just go all out on squats. This past Monday, I added BSS for the first time in a while. I had some lower back tightness/soreness the next day all the way until today (Thursday). During my playoff basketball game, my lower back was getting really sore/tight and it hurt a LOT to play. I've done heavy squats + BSS in the past before, but never experienced this.
Something to note: I only did BSS on my left leg this week, because my left ankle is still recovering from a sprain and putting it back on the bench to do BSS for my right leg, was very irritating and aggravating on my left ankle/ couldn't use it to stabilize.
Could that have something to do with it maybe?
If not, what other potential reasons can there be for really right/sore lower back pain days after a lower body workout, and one that gets really painful during basketball.