Callahan, who succeeded the recently retired Chris Drury and bumps the number of U.S.-born captains to four, joins Pittsburgh's Sidney Crosby as the only captains in the Atlantic Division -- New Jersey, the New York Islanders and Philadelphia have not designated a captain.
SOG: 179 | +/-: -7
Buffalo has been without a captain since February, when defenseman Craig Rivet was traded to Columbus. The Sabres' roster currently lists no alternates; Jason Pominville, Paul Gaustad, Derek Roy, Thomas Vanek and Jochen Hecht wore an "A" during the 2010-11 season. Florida also has been without a captain since February -- the Panthers went captain-less after dealing Bryan McCabe to the New York Rangers. They list only one alternate, center Stephen Weiss.
Colorado's captaincy is vacant following the retirement of defenseman Adam Foote, who succeeded Joe Sakic as captain in 2009. The Avs currently list no alternates, though Milan Hejduk and Paul Stastny wore an "A" last season.
Callahan is the second player named captain in the past few days. On Friday, the St. Louis Blues gave their captaincy to David Backes. He replaces Eric Brewer, who was dealt to Tampa Bay at the trade deadline in February.