Day 4: Nishikori & Osaka triumph 🇯🇵

Day 4 at the Aus Open. Kei Nishikori and Naomi Osaka triumph, the new tie-breaker rule explained, we meet the player drivers, and learn what it takes to be a chair umpire. See omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.