VIDEO: Mike Krzyzewski's grandsons help him text Justise Winslow in 'SportsCenter' ad
Streeter Lecka / Getty Images Sport / Getty
Mike Krzyzewski is 68 years old, but has no problem communicating with young people.
The latest "SportsCenter" spot has the Duke coach asking his grandsons to help him text former Blue Devil Justise Winslow about his performance, and his grandsons do - using only emojis.
Flame emoji.