PHILADELPHIA (CBS) — On Saturday, the Sixers announced a pair of related roster moves. The team released guard/forward Chris Johnson and signed free agent forward Robert Covington.

Covington was the first overall selection in the 2014 NBDL Draft by the Grand Rapids Drive. He is the fifth player this season called up from the NBA’s development league.

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Covington appeared in games last season as a rookie with the Houston Rockets and spent time in the NBDL with the Rio Grande Valley Vipers. He averaged 23 points, nine rebounds, two assists, 2.4 steals and 1.4 blocks per game for the Vipers last season.

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Covington won the D-League Rookie of the Year Award and made the D-League first team.

To make room on the roster, the Sixers waived Johnson who appeared in nine games for the Sixers and averaged six points per contest.

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