Jim Fassel says the Rams made the right choice in selecting his son John to take over as interim head coach after Jeff Fisher was fired ... telling TMZ Sports, "he's going to do a great job."
Jim -- who took the Giants to the Super Bowl in 2000 -- says he was sad to see his 'lifelong friend' Fisher lose his job, but excited for John's first shot at being a head coach in the NFL.
"They selected the right guy," Fassel says. "He's been very successful with his guys and they have a lot of fun with him.