I just talked about Fed a couple posts above.
The Zed version is the same. Atm Zverev looks to be the biggest threat among the NextGen. If he doesn't hit Dimigod R32 and gets to R16 (R4) here is the matrix:
1. Murray - Murray owns Zverev so this would be doom
2. Djokovic - they've never played, but Djoko is weak. I don't think Zverev has enough power to hit by Nole, so this still may be a bridge too far on paper
3. Wawrinka - just beat him in Final where
Wawa still had semblance of US Open form. Zed is playing better by the week so I like his chances
4. Raonic - Zed has the great first return game and reach to handle RaoSlug. Could easily see him systematically disect Raonic. Raonic will return Zverev well too, so Z has to break Raonic at least once a set which is not easy.
Zverev will handle Nadal. Thiem is a potential roadblock. Zverev handled him well in their last encounter, but Thiem played great for much of the Dimitrov match in their Brisbane QF.
Thiem is physically back pretty much with a new serve game. He doesn't look to be making the big speed and talent leaps that Zverev is managing at the start of 2017, but Thiem is plenty dangerous for the following reasons:
1. He's beasting. He hit a ton of hard, hard shots and serves at Dimitrov with no letup. Physically Thiem is still getting stronger and he may become something like a slower version of Nadal with more power and nearly the stamina. Long run that is a beast especially in the 5 set format. Thiem makes his opponents work like Nadal, but has yet to achieve the stamina to be left standing at end of slam. Auz is Thiem's most likely candidate for slam stamina breakthrough and it could easily be this tournament; he looks that good.
2. He's close to in form. Some of Thiem's best form ever against Dimitrov; just a bridge too far to come back from the horror of the 2nd half of 2016, but Thiem is close.
3. His serve has been changed. Thiem's Superkicker may have been the culprit that took him down in 2016 as his serve percentages dipped through the Spring and his forehand lost its sting (won Stuttgart with 25 DFs and a crap serve.) Thiem apprently has some changes to serve based on TTW members comments on form and he seems to be able to hit it utlra hard a lot more (220 to 230 kph range). The downside is the promise of the superkicker and near 70% first serve percentage does not seem to be happening, but the bigger serve and a nastier 2nd seem to be working well. Dimitrov got off the hook at Brisbane due to Thiem's new serve breaking down under pressures with a bunch of DFs.
I don't see a giant leap for Thiem in the future, but as these three come together it should be enough to make him very dangerous and stay near the top of the game. Likely to do new Thiem thread if the form from Dimigod match continues at Sydney this week where Thiem is the top seed.