Five games in five nights; 205 minutes of championship basketball.

The experts said it couldn’t be done. No team had the guts. No team had the depth. No team had the stamina.

Then again, no team had Kemba Walker.

“Kemba wouldn’t let us lose,” teary Connecticut assistant coach George Blaney told the Post. “He would not let us lose.”

The 6-foot-1 master of fast-twitch muscle, fearless soul and unflinching desire to win from The Bronx, willed Connecticut to its seventh Big East tournament title with a thrilling 69-66 win over Louisville.

Walker, who finished with a game-high 19 points and had three assists, made two free throws with 16.4 seconds left giving UConn a 67-64 lead. But Walker was caught flatfooted when Louisville’s Mike Marra went up for a 3-pointer with 3.9 seconds left. Marra, a 76.9 percent free throw shooter, stepped to the line with a chance to tie.

Marra made the first, missed the second, and unintentionally made the third. Shabazz Napier was fouled and made both free throws for a 69-66 lead. Louisville executed a perfect last second play, but Preston Knowles’ 3-pointer bounced off the rim.

“I thought it was good,” Walker said. “With the way this tournament has been going, I thought it was going in. But God has a plan for us.”

Suddenly it’s not insane to wonder if the plan ends in Houston, site of the Final Four. With a force such as Walker, anything, such as winning five games in five nights, is possible.

“He told me after the last regular season game they were going to do this,” Walker’s mother, Andrea, told The Post.

What a bold prediction. What a bold player.

For UConn (26-9), this is its first title since 2004. Louisville (25-9) was seeking to win its second title in three years.

Walker, the Most Outstanding Player, scored 130 points over the five games.

The Cardinals got 18 points from Knowles, but Connecticut freshman Jeremy Lamb tilted the balance with 13 points, seven rebounds, three assists, two blocks and one steal.

It was an impressive climb for the Huskies, which began this tournament as a No. 9 seed.

“He had a different look on his face all week,” UConn coach Jim Calhoun said. “He really did.”

Walker had wanted so badly to win on this court, wanted it so badly he forced and pressed and left a loser. That epic six-overtime loss to Syracuse two years ago in this tournament? Walker was 4-of-18 shooting with five turnovers. The first round loss to St. John’s in last season’s tournament? Walker was 4-of-17.

“His rise from Rice High School, you know, pretty good player, to where he is now is phenomenal,” Calhoun said. “Phenomenal.”

UConn seemed to be a in a great position with 9:40 go. The Huskies, which led by as much as 34-20 in the first half before falling behind 40-38 in the second, were leading 50-46 when Louisville got whistled for its seventh team foul, putting Connecticut in the bonus.

UConn was the league’s second-best free throw shooting team at 73.6 percent. The Cardinals, however, were doing a better job controlling pace by going to a zone defense. It would come down to a test of wills.

It would come down to Kemba Walker.