Former Bills defensive backs coach/passing game coordinator John Butler joins "Tim Graham And Friends" brought to you by CTBK to talk about his players, his departure and why football DNA is critical.

TGAF: Bills schedule analysis; Gene Kershner talks Preakness

Tim Graham is a senior writer for The Athletic. He previously worked for ESPN, the Buffalo News, Palm Beach Post and Las Vegas Sun. He's also an NFL analyst for WIVB Channel 4 in Buffalo. He says he'll write a novel someday, but I don't believe him.