TNT sideline reporter Craig Sager will miss the NBA playoffs as he undergoes treatment for leukemia.

But when San Antonio Spurs and the Dallas Mavericks played on Sunday, TNT replaced Sager with his son, Craig Sager Jr. 

Sager Jr. looked like a pro in the interview, and Popovich was a total class act. Junior is actually a beat writer for the Atlanta Falcons and covers high school sports in Georgia.

Our thoughts and prayers are with Craig Sager throughout his treatment.