According to presumptive GOP nominee Donald Trump, former Indiana University basketball coach Bobby Knight will be a key figure at the upcoming Republican National Convention ― where he will presumably hurl Clint Eastwood’s 2012 convention chair at an underperforming point guard, or something. Normally, it would be strange to hear a long-retired college coach receiving top billing at a convention, but what’s Donald to do? He doesn’t really have a lot of friends in the GOP, and he’s not making many new ones.

But as the list of people giving Trump a wide berth grows in quantity, the effect of not being able to win friends and influence people is starting to deepen in other ways. More and more Republican officials are getting under Trump’s tissue-thin dermis. If you’re wondering why Trump’s recent speeches have pivoted to unhinged free-association instead of becoming more “presidential,” consider the fact that a number of Republicans are now living rent-free in Donald’s head. On this week’s First To Last, we run down the A-List annoyers.

RANK GOP LEADER Photos: Getty, Associated Press

Editor’s note: Donald Trump regularly incites political violence and is a serial liar,rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.