Come on, guy... Fourteen pages of discussing these things, with people working together and with the shirt's manufacturer to determine the exact model shirt used in actual screenshots posted on this thread. There's been plenty of discussion of the fact that different shirts were used, too. Why use your first post on the RPF to derail things like this? You're pointing people away from a screen-accurate shirt and recommending another model based on an image that doesn't show it. No one's seen an 8800R, a shirt that has little McDavid M's all over those side panels, in any episode. The 8840R is the one shirt we know for a fact is in the show. We know others are used as well, but have not positively ID'ed them. Someone did suggest earlier that a Nike shirt is in the pilot with a shoulder logo covered up but no one's followed up to confirm.
There are more then just the one shot that show the shirt with no hexagons on the side, and many of them look identical to the 8800R. If you also move up to the top of the page PcFish has a pretty convincing image of the shirt with the logo removed. (The logo that was the reason people strayed from the 8800R)
Maybe you should read all 14 pages before accusing a new poster of making an invalid point. PcFish was able to make a near identical piece to a lot of the shots in the earlier episodes just by pealing off the logos on his 8800. Yet you would rather believe an reference to another Nike shirt with no reference material or images.
I feel like you need to get off your high horse and realize this is a forum that is open to creative discussion, this is the definitive thread for his outfits and all his outfits deserve to be explored. You spending time harassing people based on honest opinions is what is derailing the conversation, not people making suggestions.