Coach Mike Krzyzewski's fairytale ending is alive and well after Duke came from behind to knock Texas Tech out of March Madness 78-73 and move on to the Elite Eight.

Krzyzewski – affectionately known as 'Coach K' – is in the last season of his 42-year run as Duke's head coach, and is searching for his sixth national championship.

It was far from easy for the Blue Devils against a Red Raider side in their third Sweet 16 from the past four tournaments, trailing 33-29 at half-time.

In the final 15 minutes, neither team was able to build a lead of more than five points as it seesawed back-and-forth before two clutch Jeremy Roach jump shots gave Duke a 73-68 buffer with 1:33 remaining.

Duke's top NBA Draft prospect Paolo Banchero showed exactly why he is going to make plenty of money at the next level, scoring a team-high 21 points on seven-of-12 shooting to go with four assists and three steals as the best player on the court.

Legendary Duke coach Mike Krzyzewski is through to the Sweet 16 at his last March Madness before he retires.

'Coach K' is in his 42nd season in charge at the school, and is searching for his sixth national championship.

His Blue Devils took on Michigan State and fellow Naismith Memorial Basketball Hall of Fame coach Tom Izzo in the second round on Sunday, pulling away late to win 85-76.

Duke boasts three likely first round picks in this year's NBA Draft, and they showed exactly why, headlined by potential number one overall Paolo Banchero.

Banchero, who stands at six-foot-10, showed his all-round game, hitting tough pull-up jump shots, flashing an advanced interior passing game and defensive mobility to finish with a team-high 19 points on 8-of-14 shooting, including 2-of-5 from long range, and an equal team-high four assists.