Final answer:
In 2018, Mike Krzyzewski was associated with Duke University and John Calipari with the University of Kentucky, both serving as head coaches for their respective men's basketball teams.
Step-by-step explanation:
In 2018, Mike Krzyzewski and John Calipari were prominent figures in college basketball. Mike Krzyzewski, often referred to as Coach K, was the head coach of the Duke University men's basketball team. John Calipari was the head coach of the University of Kentucky men's basketball team. Both coaches have had significant success in their careers and are well-known for their contributions to college sports, specifically NCAA men's basketball.