I used all the right setting - AF-C, HP mode, MS only, Ch, 3x3 zone. The problem was at that distance as shown in my samples the 3x3 zone is simply too large and imprecise, it switched focus from the skater onto the background and back.
Obviously single point would have been better but I couldn't keep switching the modes when actions were flying thru left and right.
I used to be a 5D3 shooter and imo 4/8 points expansion would have been perfect in such situation. It's def something that Fuji can implement and improve further.
Overall the update is better than nothing, but it's all of a catch up game and still clearly behind against its main competitors such as A6000, GH4, EM1 etc. by a fair margin.