The first time we are aware of them playing was in June of 2017, in the China Open, when Joshua was 18. Filler won 11 - 4
In the next year's China open, Chang won 11 -7
Then at the US International 9-Ball Open this past Fall, Chang won again 11 - 5
Thanks for the info , Mike.
So, in there five matches we know of:
Chang 11 Filler 9
Filler 17 Chang 14
Filler 11 Chang 4
Chang 11 Filler 7
Chang 11 Filler 5
Total score Chang 51 Filler 49.
A hundred racks contested have proven practically nothing with these two very evenly matched players!