Two things i noted from the exif, subject was 7+ m away and shutter speed was only 320 on a 300mm lens, to my eye it does look a little soft, i think a faster shutter speed would have helped and perhaps not such a large crop. Just my opinion.
Thanks
It was hand held at f4 with the 300mm f4 Nikon on a D300 at 1/320 and ISO 200 - I used single point focus and spot metering
Minimal adjustments in LR, just brought the "whites" and highlights back a little
Is that OK?
the second image is similar but at 1/250th sec