BOJ gov Kuroda's press conference is due to start shortly at 06.30 GMT

USDJPY broke down through decent option-related support at 122.00 as Nikkei posted fresh end of session losses

Low so far 121.81. Bids noted around 121.75-80. Currently 121.92

Remember the daily option expiries are "vanilla" which means they are still in play until expiry time at 15.00 GMT even if the level is breached prior