Malphite vs Pyke Support Matchup
Malphite Support wins 49.8% of 651 Low Elo games against Pyke Support, +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 Malphite
When Pyke commits with Phantom Undertow(E), hit him with Seismic Shard(Q) and use the movement-speed swing to move out of the returning stun path. Save R for an all-in or to avoid a hook when timing permits.
Seismic Shard(Q) steals movement speed, which can help Malphite sidestep Phantom Undertow(E)'s returning stun; Malphite support players specifically cite Q's speed swing as counterplay to Pyke's engage.
Unstoppable Force(R) can avoid Pyke's hook or dash-stun when its displacement immunity overlaps the incoming ability, so timing the dash matters.
How to play as Pyke
Do not treat Malphite as a normal hook target: Malphite can use Q to gain movement speed and R to avoid your hook or dash-stun. Wait for those tools to be spent before committing your full engage.
Sources
These notes come from r/supportlol, checked against the champions' abilities.