The match results seem to be returning null wins/losses, which suggests the result field may use different values. Let me check the schema quickly.
Here's the breakdown for Jeskai Blink in Modern, looking at all matches since Casey Jones, Vigilante was released (March 6, 2026), excluding mirrors:
Without Casey Jones (main): 9,696 matches, 50.7% winrate (4,704W / 4,581L)
With Casey Jones (main): 598 matches, 50.9% winrate (304W / 293L)
The difference is essentially negligible — about 0.2 percentage points. Casey Jones is showing up in roughly 6% of Jeskai Blink entries and is not moving the needle on performance in either direction. The card may be filling a flex slot for some pilots, but the data gives no indication it's a meaningful upgrade or downgrade for the archetype.
Sources: Data from 73 Modern tournaments since Casey Jones release (74% MTGO, 26% Melee).
https://www.mtgo.com/decklist/modern-challenge-32-2026-04-0512838140
https://www.mtgo.com/decklist/modern-challenge-32-2026-04-0412838136
https://www.mtgo.com/decklist/modern-challenge-64-2026-04-0412838129