Sleeper:
A draft term for a NFL player that an owner believes is going to have a breakout season. These are usually players who are not rookies, but they can be. For the most part they are not well known NFL players. For example, Edgerrin James would not have been a sleeper for the 1999 season, because many people knew he was going to have a good to very good season. However, Kurt Warner would have been because very few people expected much performance from him, yet he was the leading player in most leagues in 1999. Usually sleepers are drafted in the middle to late rounds of a draft.
http://www.fftoolbox.com/football/2007/sleepers.cfm
http://www.fftoolbox.com/fantasy_football_dictionary.cfm

BTW，每周只能有一个ＱＢ上场。但是有一周某个队会，已比赛，所以要候补ＱＢ。我们现在已经有另外的ＱＢ了。你进去队部看看就知道了。