Sylas vs Zac Jungle Matchup
Sylas Jungle wins 44.8% of 1,241 Low Elo games against Zac Jungle, -1.6 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
How to play as Sylas
When an objective fight is coming, steal Let's Bounce!(R) for its repeated area knock-ups; a Sylas guide recommends prioritizing area-effect ultimates for upcoming teamfights.
Save Abduct(E2) for Zac's Elastic Slingshot(E) charge when it is in range; landing the knock-up can interrupt the engage.
Sylas can Hijack Zac's Let's Bounce!(R), which bounces through enemies to knock them up and slow them; players have also shown Sylas casting stolen ultimates during Abduct(E2).
Abduct(E2) knocks up Zac and can interrupt Elastic Slingshot(E) while he is charging it.
How to play as Zac
If Sylas still has Abduct(E2) available, avoid charging Elastic Slingshot(E) in range of him; wait until he has spent the knock-up before committing to the launch.
Sources
These notes come from r/sylasmains, r/thesecretweapon, mobafire.com, lol.fandom.com, and LoL Wiki, checked against the champions' abilities.