NBA: Sixers sign Myles Powell, waive Grant Riller

The Philadelphia 76ers have signed Myles Powell to a two-way contract. In a related move, the team has waived Grant Riller. Powell joins Philadelphia after appearing in 14 total G League games over the last two seasons with the Westchester Knicks. Last season, Powell appeared in 13 of the team's 15 games, averaging 17.8 points, …