Aaron Long did not play last week because of a hamstring injury. (Photo courtesy of MLS)

Aaron Long can play for the Red Bulls, but it will be up to interim head coach Bradley Carnell to decide to use the center back at D.C. United Saturday night.

Long missed last week’s 3-0 home defeat to the Philadelphia Union with a hamstring injury but has been training with the MLS club this week.

“He’s had a good couple of days of training,” Carnell said during a media conference call Friday. “His hamstring seems to be doing well. He’s fully in training and integrated in the team. We have some decisions to make but he’s ready to play.”

Midfielder Sean Davis, who has a knee injury, is still sidelined.

Front Row Soccer editor Michael Lewis has covered 13 World Cups (eight men, five women), seven Olympics and 25 MLS Cups. He has written about New York City FC, New York Cosmos, the New York Red Bulls and both U.S. national teams for Newsday and has penned a soccer history column for the Guardian.com. Lewis, who has been honored by the Press Club of Long Island and National Soccer Coaches Association of America, is the former editor of BigAppleSoccer.com. He has written seven books about the beautiful game and has published ALIVE AND KICKING The incredible but true story of the Rochester Lancers. It is available at Amazon.com.