Graves vs Vi Jungle Matchup
Graves Jungle wins 52.0% of 2,646 Low Elo games against Vi Jungle, +0.9 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 Graves
Before level 6, keep enough space to threaten autos without entering Vault Breaker(Q)'s range; hold Quickdraw(E) for its release, and disengage if it connects.
After Vi reaches level 6, save Smoke Screen(W) for Assault and Battery(R) when it targets you, then kite as she lands instead of spending W on poke.
Vi's Vault Breaker(Q) has a long early cooldown, and Graves can use Quickdraw(E) to sidestep its release.
How to play as Vi
Look for a level-three invade only after tracking Graves's route and checking that your lanes can move; if Graves has spent Quickdraw(E), Vault Breaker(Q) gives you a strong window to commit.
Sources
These notes come from r/GravesMains, checked against the champions' abilities.