"How The Investment Grade Dominos Will Fall" - UBS Explains

According to Citigroup's Matt King, it is now officially too late to save junk debt, which has entered the final stage of the credit cycle, the one where defaults for high yield bonds rise with every passing month.
Both what about investment grade, which according to Citi is still just ahead of the "bubble bursting phase"? Here is UBS' credit strategist Matthew Mish with one take on what happens to IG debt over the coming 12 months.
How The Dominos Will Fall?