Excellent focus and tones on this. I like the reflection. I do think however that the lighting on the top half of the ball is a bit harsh and would experiment with different lighting. Good effort!
Yes, that is indeed a golf ball. It even looks relatively naturaly in grayscale. Nice reflection. Not the world's most interesting subject matter, but a good shot.
Why did you cut the reflection off at the bottom? The white is a bit overexposed and the composition leaves something to be desired (centered image, etc). Nice contrast for duotones tho.
Nice idea. I think this image could maybe have been improved by taking the golf ball off-center, including the shadow, and exposing the golf ball a bit better. The ball is overexposed, and the dimple texture is lost in on the sides and top.
The white part is a little "blown out". Should have made that part more grey (like the middle part) and then have the middle part a darker grey. Still a nice shot however.