“It’s a great pleasure to play against all of them. I’m really looking forward to tomorrow.”
Amazon Prime pundit Greg Rusedski meanwhile makes Medvedev his new favourite to win this year’s Finals.
He said: “This is the dream semi-finals, you have the three Grand Slam champions because we didn’t play Wimbledon this year.
“On top of that you have the hottest player on Tour right now, Medvedev, who won in Paris.
“Thiem knows he’s a Grand Slam champion, Medvedev wants to be a Slam champion and you’ve got the No 1 and No 2 players in the world.
“This is a perfect finish to the season considering what everybody’s had to go through this year.
“I’m leaning towards this guy called Daniil Medvedev at the moment, I’m just super impressed with him.
“I’m just thinking this could be his year to win the title. Despite his head-to-head, there’s something I saw in his match with Novak Djokovic, I’m leaning towards him.
“Can any of the four guys win? Of course they can. But who has played the best so far at this event? That’s been Medvedev, in my opinion.
“He is my favourite in my opinion to win this tournament the way he’s playing.”