A few notes and observations heading into the NBA playoffs’ second round … Jamahl Mosley out in Orlando The Magic fired head coach Jamahl Mosley on Monday, ending Mosley’s five-year run with the team hours after a disappointing Game 7 loss in Detroit . The decision was expected: Orlando underachieved this season , finishing with 45 wins and having to scramble to beat Charlotte in the play-in finale just to make the playoffs. An early series surge offered a glimmer of hope that Mosley could keep his job, but the Magic’s anemic offense over the final two games of the first round likely sealed his fate.  An Orlando opening is a coveted one. Rival coaches look at the Magic as a team ready to win, especially in the Eastern Conference, where simply rediscovering a defensive identity—Orlando, a top-three defensive team in each of the last two seasons, finished 13th in this one, per NBA.com—should be enough to push the Magic into the top five next season.…