SI has learned that at least two teams have taken the unusual step of asking the NFL office not to schedule the officiating crew headed by referee Dick Hantak (above) for their games. Why the concern? The Hantak crew has presided over three of the five games in which the most penalties were walked off this season: the 49ers-Bills (34 flags), the Giants-Raiders (31) and the Chargers-Chiefs (24, which ties for fourth). Excluding Hantak's crew, the average number of penalties per game this season is 13.7. The league doesn't allow its officials to talk to the media, but NFL director of officiating Jerry Seeman says the work of the flag-happy seven-man crew hasn't been as bad as it seems. Before Hantak's group assessed 18 penalties in the Panthers-Cowboys game on Sunday, Seeman said, "Their overall accuracy and performance have been good." Through Monday's play, here are the referees whose crews have the highest penalties-per-game averages this season.