Background Focus

I am shooting with a low aperture 2.8 and while PureRaw results I love for my main subject in sports action, the background is distorted and looks bad. I am new to raw I, how does one only denoise/sharpen the subject? See my example, I love the subject, but the background distortion takes away, how can I reduce that look?
canon R7
f 2.8
ISO - 6400
1/1000 shutter

I see the tool brush now, I got it, I think