The Japanese yen found itself at the top of the daily leaderboard thanks to calls for BOJ tightening and a big return in broad negative risk sentiment.  Meanwhile, higher-yielding currencies like the Aussie and Kiwi took major hits, as the PBOC's surprise rate cuts threw the spotlight back on growth concerns in China and risk-off vibes returned to the general financial markets. Here are the updates that drove major currencies around this week.