PHILADELPHIA — Now, the 76ers need a regular-season-ending victory and some help from the Memphis Grizzlies on Sunday. A victory over the Detroit Pistons paired with the Grizzlies beating the Boston Celtics will give the Sixers the Eastern Conference’s third seed in the upcoming playoff. The Sixers created that scenario after beating the Indiana Pacers, 133-120, in Saturday’s afternoon game at the Wells Fargo Center. Joel Embiid finished with 41 points and 20 rebounds as the Sixers (50-31) reached at least 50 wins for the third time in five seasons. They finished 49-23 during last season’s 72-…
