NHL-National Hockey League roundup

March 4 (The Sports Xchange) - Anaheim Ducks right winger Tim Jackman is out four to six weeks with a lower-body injury. Jackman was injured in Sunday's 3-1 win over Dallas after colliding awkwardly with Stars forward Ales Hemsky. - - A torn oblique muscle will keep Columbus Blue Jackets right winger David Clarkson off the ice for four to six weeks. Blue Jackets general manager Jarmo Kekalainen said Clarkson suffered the injury during Tuesday night's game against the Washington Capitals. - - New York Islanders forward Matt Martin faced a hearing for kneeing Dallas Stars defenseman Trevor Daley during a game. Daley was hit by Martin at 1:48 of the first period in Dallas' 3-2 overtime win Tuesday night. Martin received a five-minute major for kneeing and a game misconduct. - - The Tampa Bay Lightning, in conjunction with Hillsborough County, plan to spend $25 million on renovations for Amalie Arena during the next two summers. To date, more than $60 million has been spent on the facility over the past four years, combining public and private investments. - - The Buffalo Sabres assigned forward Mikhail Grigorenko to the Rochester Americans of the American Hockey League on Wednesday. In 12 games with the Sabres this season, Grigorenko has one goal and one assist. - - ESPN has been awarded the exclusive U.S. broadcast rights to the 2016 World Cup of Hockey. The NHL and NHL players association made the announcement Wednesday for the event, which will be played at the Air Canada Centre next year in Toronto from Sept. 17 to Oct. 1. - - The Tampa Bay Lightning promoted center Vladislav Namestnikov from the Syracuse Crunch of the American Hockey League on Wednesday. Namestnikov already has appeared in 26 games for the Lightning this season and produced three goals and seven points. - - The Washington Capitals signed defenseman Tyler Lewington on Wednesday to a three-year, entry-level contract that starts next season. The 20-year-old Lewington, drafted by the Capitals in the seventh round in 2013, has played for the Medicine Hat Tigers of the Western Hockey League for the past four years. (Editing by Frank Pingue)