What's the benefit of waiting until the final hour? Less time for other teams to counter with additional moves? Huh? Teams that are selling are waiting for best and final offers to drive up the return, while teams that are buying are hoping the seller will get desperate. The tweet says the trades are done and that the wait is only in announcing them. Every year there are trades that are done but not announced until final hour. He's not referencing one specific trade, just the common practice of last minute deluge of trades.