9:32pm: The A's announced they were unable to reach an agreement with Iwakuma and his representatives.
5:20pm: It would be a surprise if the A's reach a deal with Iwakuma, Billy Beane told Susan Slusser of the San Francisco Chronicle (Twitter link).
3:53pm: There has been no movement between the A's and Iwakuma today, according to Jon Heyman of SI.com (on Twitter). The deadline for a deal is just over seven hours away.
9:19am: The Athletics and Iwakuma are still talking today, tweets Slusser. There is a report out of Japan suggesting Iwakuma will return to the Rakuten Golden Eagles, with a press conference due Wednesday.
MONDAY, 12:00am: Slusser hears (Twitter link) that Iwakuma would be able to take his physical after the negotiating deadline, with any agreement being nullified should he fail the physical. As such, talks could continue into Monday.
SUNDAY, 8:46pm: The deal with Iwakuma appears to be dead, tweets Ken Rosenthal of FOX Sports. The 29-year-old would need to be in the Bay Area tomorrow for a physical and he is still in Japan. If a deal is not reached, Oakland will be refunded the $19MM posting fee.
9:05am: With less than 24 hours left to reach an agreement, negotiations between Hisashi Iwakuma and the Athletics are "not looking good," tweets Susan Slusser of the San Francisco Chronicle. While Oakland's window doesn't officially close at midnight tonight, Slusser explains that an agreement must be reached by then to allow time for a physical (Twitter link).
After the Athletics posted the winning bid for Iwakuma, earning the rights to negotiate with right-hander, it appeared the two sides were far apart, with discussions reaching an impasse. While talks have continued since that point, it seems likely that no agreement will be reached and the A's will have their posting fee returned. As for Iwakuma, one source in Japan who spoke to Slusser thinks that remaining in Japan could be the best outcome for the 29-year-old anyway (Twitter link).