Kog'Maw vs Draven ADC Matchup
Kog'Maw ADC wins 55.1% of 773 Low Elo games against Draven ADC, +0.4 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 Kog'Maw
Trade only while Bio-Arcane Barrage(W) is active, and do not spend it for a single attack or minion; Kog'Maw players recommend treating equal farm with no deaths as a good lane against Draven.
If Draven shoves, try to hold the wave just outside your turret and coordinate a gank; Kog'Maw mains note that Draven's lane can be punished before he cashes out his passive stacks.
Bio-Arcane Barrage(W) temporarily extends Kog'Maw's attack range and adds percent-of-target-max-health magic damage, while Draven starts with 50 more base attack range (550 to Kog'Maw's 500).
How to play as Draven
Look to punish when Kog'Maw wastes Bio-Arcane Barrage(W); Kog'Maw mains describe the ability's cooldown as a window when his empowered range and damage are unavailable.
Sources
These notes come from r/KogMawMains, checked against the champions' abilities.