back nine
n.— «Both NBC and Warner Brothers have now confirmed that the ratings-challenged (but fan-adored) Studio 60 has received a “back nine” order, meaning the series will complete a full 22 episodes for its freshman season.» —“Exclusive News: Studio 60 Picked Up For Full Season” by Kristin Veitch E! Online Nov. 9, 2006. (source: Double-Tongued Dictionary)