ESPN college hoops analyst LaPhonso Ellis talks with The Post’s Justin Terranova about his new role and the North Carolina-Duke showdown he will cover Saturday.

Q: What has the Gameday experience been like?

A: It’s been just incredible. The energy — I was a really passionate player and I fed off the energy of the boos on the road and cheers at home — so to walk back into that atmosphere gets my adrenaline and goose bumps going. I feel literally ready to play. The students have been very welcoming, making us feel comfortable.

Q: The Tar Heels lost Cole Anthony for a long stretch, but why else has North Carolina been so down this year?

A: It started before Anthony got hurt, really. They have good players, but they are role players. They don’t have the alpha dogs on the offensive end to carry them. For example, Brandon Robinson shot 40 percent from 3 last year, he’s a perfect guy to have around two people who can create their offense off of the dribble or out of the post. But they haven’t had that one guy who can get offense for himself and draw the defender and get it to the open guy.

Q: Where does Duke rank among the elite teams in the country?

A: They are right there. They have one of the most efficient defenses in the nation. Offensively they are efficient, they know their identity on the offensive end, which is get the ball inside to Vernon Carey as much and as often as possible. They are really good getting into you on the defensive end and forcing turnovers leading into transition baskets. They’ve shot it better than I thought. One issue is they don’t have a guy who can … break you down time after time to create offense for himself and teammates. Tre Jones tries to be that guy, but after 40 minutes — for as hard as he guards — he wears down a little bit.

Q: Is Seton Hall a legitimate national title contender?

A: Seton Hall has been my dark horse since the very beginning. Veteran team, solid point guard play with Quincy McKnight, who I think while Myles Powell was out showed he can be a scorer as well as a facilitator. Everyone has stepped up when they needed to and that brings a certain level of confidence. An elite scorer in Powell, terrific rim protectors and they are just getting their second-leading scorer back in Sandro Mamukelashvili.

Q: How is San Diego State undefeated?

A: They are one of the most efficient defensive teams in the country. Everyone talks defense, but when you watch it takes strategy, communication and everybody locked in and anticipating what the next one will be. They got a lot of deflections, the defense is in the right place all the time. They’ve got a transfer from Washington State, Malachi Flynn, who is one of the top-10 point guards in the nation.