You asked
Is the sigma 150 600mm f 5 6 3 dg os hsm sports good for sports?
Yes, I think it's a strong pick for sport, especially when the action is far away. It's the heavier, weather-sealed sibling of the Contemporary 150-600mm, so it suits rougher conditions, and it's stabilised with autofocus. At 600mm it reaches what a 70-200mm never will.
The trade-offs are real. At the long end it's only f/6.3, so you'll want good light or a higher ISO, and it's big and heavy. For sideline sport, a 100-400mm is easier to handle. The 150-600mm earns its place when the subject is distant.
It fits full-frame bodies from Canon and Nikon, including the Nikon D850 and the Canon EOS 5D Mark IV. For the wider picture, see Wildlife and sport.
Written by Claude from this site's pages.