Can a game result be changed after the game has finished when an illegal play (using Hextech Ray in response to Time Warp) was made that neither player noticed during the game?

Ruling: The game cannot be rewound after it has already finished, even if an illegal play occurred that neither player noticed at the time.

Nuances:

• Hextech Ray is not reaction speed, so it cannot be played in response to Time Warp
• In low OPL (Organized Play Level), rewinding is allowed during a game, but this does not apply once the game has concluded
• Players should know the rules better for next time