Not so new…
1985 San Francisco Chronicle 31 July 59 (Factiva) The pitcher of record was Howell, but as Howell likes to say, he “vultured” this one. As in coming in for an unattractive kill.
A number of relief pitchers, including new Hall of Famer Goose Gossage, have been nicknamed “The Vulture” by teammates for picking up undeserved wins. Earliest I can find:
1979 New York Times 5 July B11/1 A 1979 Yankee, Luis Tiant, hurled strongly until the eighth, and the save was picked up by Ron Davis, who claims his teammates called him “The Vulture” after he blew a couple of recent saves and took victories instead.