Most of the NFL came into this season having little idea what Tyrod Taylor would be able to do as a starting quarterback. Steve Spagnuolo, on the other hand, knew very well.

"I watched him for two years down in Baltimore give the Baltimore starting defense headaches every day," Spagnuolo said of the former Ravens backup who was mired behind Joe Flacco and ran the scout offense for that team. "Especially on Friday when it was a red zone day. If he tucked it and put it in, he was getting in the end zone. It used to drive those guys nuts."

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On Sunday, he'll be trying to make the Giants crazy. His ability to pass and throw makes him a challenge unlike any the Giants have faced this season.

"The best athlete I've seen on a football field," said Spagnuolo, who was a defensive assistant with the Ravens. "I watched him for two years and he was the best athlete on that team down there. He just had fun playing and now he's taken that into a starting role in Buffalo."

Spagnuolo said he had no doubt that Taylor could succeed in that role if he found a system that matched up well with his skills.

"It's obviously worked," he said of the marriage with the Bills, which includes some read-option, some scrambling and some deep passing. "I'm happy for him. I don't want him to do too good this Sunday, but I'm happy for him."