Patch 9.24 is coming with a number of ARAM balance updates - WIN.gg
Vandiril on Twitter: "Olaf in ARAM has 61,5% win rate right now. Top 2 on the list are very recently 'reworked' champions, followed by a recently released one (Renata still hasn't been
This site can predict your chances of winning your ARAM - The Rift Herald