Craig Don't kid yourself. Any large predator will attack anything if it is hungry enough.
There is plenty of credited information out that directly contradicts Mr. Hammela's opinion.
While I agree it is nowhere near common, it is possible. Here an example that is real close to home. The link, www.aws.vcn.com/wolf_attacks_on_humans, is the rest of the story, but this one is interesting due to the location.
George Bird Grinnell investigated several reported wolf attacks on humans. He dismissed many reports for lack of evidence. Grinnell did verify one attack.
This occurrence was in Northwestern Colorado. An 18-year-old girl went out at dusk to bring in some milk cows. She saw a gray wolf on a hill as she went out for the cows. She shouted at the wolf to scare it away and it did not move.
She then threw a stone at it to frighten it away. The animal snarled at her shouting and attacked her when she threw the stone at it. The wolf grabbed the girl by the shoulder, threw her to the ground and bit her severely on the arms and legs. She screamed and her brother, who was nearby and armed with a gun, responded to the scene of the attack and killed the wolf.
The wolf was a healthy young animal, barely full grown. Grinnell met this girl and examined her. She carried several scars from the attack. This attack occurred in summer about 1881. (Grinnell, G.B.; Trail and Campfire - Wolves and Wolf Nature, New York, 1897)