Oklahoma City center Byron Mullens was assigned to the Tulsa 66ers, the Thunder’s NBA Development League affiliate, it was announced today.  The assignment marks the 18th time in the 2010-11 season an NBA player has been assigned to an NBA D-League affiliate, and it is the second assignment for Mullens, a second-year pro out of Ohio State.

Mullens (7-0, 275) has appeared in 18 games for the Thunder in the last two seasons, including five this year. He was first assigned to the 66ers last season, when he averaged 15.1 points and 7.5 rebounds in 27 games, earning All-NBA D-League Honorable Mention honors.

Oklahoma City acquired Mullens in a Draft-night deal with the Dallas Mavericks, who selected the early-entry candidate in the first round (24th overall) of the 2009 NBA Draft. A former McDonald’s All-American, Mullens averaged 8.8 points and 4.7 rebounds in 20.3 minutes in one season at Ohio State, and was named to the Big Ten All-Freshman Team.

Mullens joins the 66ers for the team’s back-to-back games at Sioux Falls on Friday, Dec. 10, and Saturday, Dec. 11.