Sorry forgot details all taken on my K10D with a Tamron 70-200 F2.8

After a couple of weekend when I have been very underwhelmed with my Tamron lens, I spent the week taking advice from SRS and this forum, I accessed my debug menu and started fine tuning my AF. It took a while but when on Friday I was taking sharp pictures of birds doing dogfighting in flight I was happy I had the setting OK.
So I headed to Vagrants sports club with hi hope and boy do I love this lens now.
1.Offload


2.Quick hands


3.Crunch Time


4.Rambo Girl

OK just tried it with my *istDL body and the same problem super sharp image but a good meter or more behind my target

If I adjust my K10D for this lens would all my other lens be out on the body?

On a K10D

It is new just gave it a second weekend to confirm issue
Cheers for reply have contacted supplier
The body is fine will all other lens can it be wrong with just one?

OK I have given this lens two weekends of action to confirm what I thought was an issue last weekend. At minimum focal length it is spot on and sharp but anywhere beyond that and ""this dog don't hunt"" I have 90% of pictures that are only focused about 10m behind what I aimed at. An example was the cricket yesterday I could only get the Batter in focus by aiming at the back of the non-batting batsman...
I am returning this lens as if is useless for the one thing I bought it for a winter of rugby.
My question is where to send it. Is it an issue with the Model in which case I return to the supplier and look else where, or is it just with this lens so I should send to Tamron for a replacement.
Anyone who has one of these lens could you let me know how yours performs.

Full size image

Well my local paper sports editor disagrees my first every published and credited photo

Taken with my K10D and 70-300 Sigma in Macro. Love the wing detail