GitHub - haakonaareskjold/FreeChampionRotations: A simple website/app displaying the current free weekly champion rotation for League of Legends, automatically fetches new rotations and patches. Requires RIOT GAMES API KEY
Game 4 Broke - LoLの情報ブログ: New free champion rotation 2015 6/2 - 6/9
Free champion rotation League of Legends - Home | Facebook
League of Legends Free Champion Rotation (Patch 13.10) - Mobalytics
League of Legends Free Champion Rotation | RiftFeed
Surrender at 20: New Free Champion Rotation Season 3 Week 15