OWINGS MILLS, Md. -- Over the past few days, Pittsburgh Steelers coach Mike Tomlin recently called the officiating "questionable" and Houston Texans coach Bill O'Brien openly voiced his displeasure over the refs.
Baltimore Ravens coach John Harbaugh chose not to join the growing criticism, even though he could easily use the officiating as an excuse for one of his team's biggest problems all season.
The Ravens rank second in the NFL in penalties.