I have two borzois and while I'll never have the chance to test them on real wolves, they've both had solo kills on coyotes. We've never taken them formal coyote hunting, just walks in the 20 acre pasture and if they happen to see one woe unto that coyote. Usually they just run the coyote down and break its neck. After the first one they pulled through the fence (it was a dumb coyote) I've never seen them break the skin. They're the same way when they kill raccoons.
My dog's sire is used as a LGD on a goat dairy, and he's had solo kills on small groups of coyotes that came and tried to break into the kid pen. He needed a little stitching up afterward, but was always fine.