Danny Ainge: Celtics Need to Play Harder

data-mm-id=”_v4y0r3nh6″>The Boston Celtics are in a slump. After kicking in Toronto's teeth on their home floor Christmas Day, the team has struggled against subpar teams; they barely scraped by the Atlanta Hawks, the worst team in the NBA by record, before fighting out an ugly win against the Hornets. They then lost to the Wizards absent both Bradley Beal and Rui Hachimura and were blown out by a Spurs team coming off an eight-game losing streak at home. Boston has struggled with injuries all season and still have yet to play a significant amount of games with their five best players healthy. This includes last night, when Kemba Walker wasn't himself after coming down with the flu (and was also ejected for the first time in his life). Despite all the caveats you can come up …