They really don't care about tennis market, at least nowhere near as much as their casual and lifestyle lines. They did sell jackets with Novak and Kei (Nishikori even got one release for USO'18 after they already signed Roger) and bags with logos as well. Those were actually pretty inexpensive and stayed at like 50% off on site for weeks (around 20 EUR, but I'm not entirely sure). Some of RF bags are also being sold, but without the logo, just like the practice shirt. That's because they don't want to be tennis specific (or even sports) brand and want to get as many people as possible (tennis fans included) to become their regular customers for everyday clothing. Someone even made a tutorial on how to remove their logo from Nishikori shorts back in 2017. That's because most people aren't really into branding, but just want activewear they can run or train in. With Djokovic they were in a bit different phase, kind of testing the waters and pushing logos much further. The ND logo was practically created for his Uniqlo line. Uniqlo makes Federer use more and more logo-less stuff and wants him wear their clothing rather than make special clothing for him. They released the RF cap, as it's far more common (and "acceptable") for those to have a text or a logo. Doesn't mean that they won't release jackets or put RF logo on clothing in the future, possibly multiple items at the same time. Even adding logo and selling older items with it is not out of the question.
Yes, I understand their motives to stay focused on their core business model and not be perceived as a sports company (which they aren't anyway), which is why they don't even bother with releasing Fed's outfits for anything other than the Majors. My question was more about why they don't do it presently with them with items that are complimentary to the outfits they do release, after all, they still bother with releasing the rest, even if in limited quantities. Maybe they will slowly adopt the ever growing Federer line as part of their strategy to market the brand to the consumer (as you suggest). The release of the jackets seems like a reasonable step in that direction, with or without additional logos. Jackets are functional piece of clothing, just like tennis outfits are: many people wear them while doing sports, including tennis, so it is not like they are just a decorative piece to add to "the collection".
It got released though. Green crocodile shirt as well, but only in Japan (and in far smaller quantity than any uniqlo tennis retail item for example).
If it got released I never saw it being sold, and I am a regular customer. I bought it off of a Lacoste warehouse, where they keep various samples and other stuff. The green croc shirt was never sold where I am. If you say that it was released in Japan then it was again limited access item (might as well not have existed for the rest of the world).
Also the only difference between uniqlo dry-ex practice shirts that Roger and Kei wear (and Novak in the past) are the added red logos. You can even see small silver squares on the back. Basically retail product with logos slapped on them..
I am aware of that. The "fading" practice shirts are quite popular.
All of the Djokovic Foundation items are just retail versions with the Peugot logo, it's as simple as that. That's also the only model Djokovic wore with and without it. You wouldn't call shirts different just because of one print. It's quite common in football to let consumers chose which sponsors logos they want and it's just considered a variation of the same product. That being said they aren't "an extension" of his PE gear and the logo is just a bonus for that distribution.
Bolded: I said exactly the same thing:
No they didn't "do that" as what was offered through Novak's charity was never intended to reach massive numbers, and as I said, was basically slightly increased personal stock, probably part of his deal with Uniqlo designed to support that charity through limited number of special items. It certainly was not the same thing as what was sold in the Uniqlo shops, be it for patches, tailoring, or something else. You may claim that it is only this or that, but fact is that there were differences.
So, basically there are three "levels" of gear that we are talking about:
1) Djokovic personal items: what he used to wear: might be exclusive items like the training shirt you posted some time ago, might be shirts with additional ventilation like you posted above, might be shorts with different hem and stitching, like you posted above, might be different tailoring (I don't think that Djokovic's Uniqlo clothes had the same tailoring, at least not how they were sitting on him) and so on
2) Djokovic personal stock: items that Uniqlo provided for him with different purposes: for his foundation - with additional patches, based on the retail versions, with Uniqlo branding, again, based on the retail offerings for members of his team that might need them, promotional activities and so on
3) retail: unaltered items that are sold in the chain of retail stores
There is a great deal of confusion from some here about which is which, and they keep insisting that it is this or that: basically they compare items from the 2 and 3 points, but claim that they are form the first one, and even refuse to make the distinction between 2 and 3, calling the items basically "the same". Customisations are just that: alterations that may go on any level and detail. If a player likes the base material it speaks highly of its quality, it doesn't mean that customisations weren't done to the item at all.
On top of that the broader point was completely lost in the bickering about the above: the broader point was that it is usual for the brands to outfit their top stars with things that are specific to them. Djokovic is no exception, regardless whether they did for him more or less than for any other star.