How do I replay a match and step through it tick by tick?

Every match you watch opens in the Arena, whether it's your own test or a match from the League. Under the field, ⏮ and ⏭ step back and forward one tick (or press ← and →), the timeline jumps to any moment, and the speed slider slows it down. Click any line in Events to replay the moment just before it at half speed.