Reports: Duke Men's Basketball Head Coach Mike Krzyzewski To Retire

Mike Krzyzewski, the longtime head coach of Duke basketball, will retire after the 2021-2022 season. Known for his saintly status in Durham, NC, he has been a three-time Naismith Coach of the Year, leading the Blue Devils to five national titles and twelve final four appearances over four decades. At 74, Krzyzewski is the all-time winningest coach in men's Division One college basketball.

What is the significance of the coach's status in Durham, NC?

What is the age of the coach mentioned in the text?