Ika predicts:
Castelia Cavaliers (2) - (3) Houston Stealth Rockets 
BSS: blinkboy vs
Solerme - Solerme definitely has the experience edge in teamlock, however I'm not sure how much SWSH BSS he has played. My gut says Solerme will likely win unless he has his traditional terrible luck. Blinkboy does have potential though. A tough matchup either ways.
BSS:
Finchinator vs Coconut - Neither of these guys have any BSPL or BSS experience, I'm just going to bold Finch here because he has more accolades on Smogon in general. This will be a good opportunity for both to grow into the slot without having to play a 3v3 main from the rip and for others to evaluate how their performance in other tiers adapts to BSS.
BSD:
marilli vs Mr.GX - I think it's really close and I hate to vote against my boy Mew Mew, but I think Marilli might have a slight edge and has been playing a bit better recently as well as Mr.Gx not being a fan of SWSH from my convos. That being said, Mr.Gx could easily win this.
BSD: Demantoid vs calvonix - I don't personally know Calvonix and I'm not that knowledgeable about the quality of the doubles scene beyond the basics but I've heard good things, I'm going to call this one a toss up depending on who shows up and this match will probably decide whether its a draw or the rockets win on a theoretical level.
SM: zaaya vs
chemcoop - A cool matchup here, both super elite USUM BSS players which should make this a good one to watch. Zaaya always brings the most baller teams that are almost USUM OU like, but I think he's been in a bit of a tour slump recently. Chem is rusty, but I think he has a slight advantage.
Classic: Megazard vs
NOVED - A super hype series with two of the best old school players in the league. I think what will really decide it is USUM BSS, which I think is both of these guy's weakest tier. If this was a pure GBU or ORAS series, I might bold Megazard's name, but I think Noved has a bit more experience and familiarity with BSS in general and that edges it.
Fallarbor Flare Blitzers (3) - (3) Ecruteak Shadow Ballers 
BSS:
Egor vs The Squash - I'm bolding Egor here. I don't think he's significantly better than The Squash or anything, I just think he's probably played more of the tier and that gives him an edge.
BSS: kamikaze vs
11oyd - 11oyd generally underperforms relative to his ladder results in tournament play, however there is no doubt that he probably has already racked up several thousand games in SWSH BSS. I just think that edge is too great even though 3 years ago undoubtedly I'd be highlighting Kami.
BSD: stax vs
EmbCPT - This is a match and a half, looking forward to catching this one live. Probably the two best doubles players in the field going at it. Edu is Edu though so it is really difficult to predict against him.
BSD:
Memoric vs Mishimono - Really close matchup, I kinda think that Memoric is going to win. Not a huge expert on either of these guys though and it could definitely go the other way.
SM: qsns vs
Jmal98 - I wouldn't say that Jmal is the strongest pure USUM player, but he's probably better than qsns. Just the experience edge and knowing niche interactions will have Jmal really comfortable in this series as long as he puts effort into his building.
Classic:
Psynergy vs average fella - Psynergy is the favourite here, Average Fella is a solid enough player to the point I even recommended him to the Farseers in BSPL III, but I'd say Psynergy is probably a tier above. Fella may actually avoid GBU in this matchup if he wants. Ofc this is bss so anything can happen.