Analysts make their reputation by dissecting replays, but Mayock said nobody will care what is said if it is at the expense of the live action.
"The No. 1 cardinal sin in TV is don't miss a live snap, and there is nothing worse than being in the middle of a replay and cutting back, where the person at home misses half the play," he said. "You can't miss any live action, and it will be a different game plan for us, which is to be careful when we insert replays."
Mayock said the obvious story line centers on Andy Reid's return to Philadelphia with the 2-0 Chiefs. Yet Mayock, like so many others, is also intrigued by Kelly's offense
"It is a breath of fresh air in the NFL, and it's kind of interesting that this offense has taken on such a dimension nationally," he said. "I was at 10 to 12 training camps this preseason, and all people wanted to talk about was what Chip Kelly's offense was like and how it would work."
On a personal level, the 55-year-old Mayock said it is extra special for him to be analyzing an Eagles game at Lincoln Financial Field. A graduate of Haverford School, he's been following the Eagles for decades.
"The first home game in the regular season I did [involving the Eagles] was last year against Cincinnati on a Thursday night, and before we started I was standing in the broadcast booth looking and saying, 'This is pretty cool,' " Mayock said, referring to a game Dec. 13 that the Bengals won, 34-13.
Now he will return to Lincoln Financial Field, and so will the memories.
"I remember being 10, and my dad was an offensive-line coach at Penn, and I would go with him to his office on Sunday when the Eagles were playing at Franklin Field," Mayock said. "I could see the Eagles when I was 10, and here I was last year on the 50 [yard line] getting to call a game, and I got extra butterflies and a kick out of the fact."
Contact Marc Narducci at email@example.com. Follow on Twitter @sjnard.