4. Steve McNair
Back in 2005, the Ravens finished their season 6-10 and dead last in the AFC North. Just five years removed from their Super Bowl title, Baltimore was looking for answers. So, they opted to trade for longtime Tennessee Titans quarterback Steve McNair. Baltimore gave up a fourth-round pick in the 2007 NFL Draft to land McNair, who would go on to find success immediately.
The following season in 2006, the Ravens finished 13-3 which became their greatest single-season turnaround to date, upping their win total by seven from the previous year. McNair led the Ravens to the division crown but, ultimately, he and Baltimore fell to the Indianapolis Colts in the Divisional Round. Those Colts would, of course, go on to win it all that year.
McNair sits fifth all-time in Ravens passing yards with 4,163, having thrown 18 touchdowns to 16 interceptions. However, he did enough for Baltimore to win games, and when talking about such a young franchise, that matters.
McNair went 15-7 as a starter for Baltimore, over two seasons, and will be remembered for giving Ravens fans something to cheer about again just a year after a miserable season. McNair's best game during that 2006 season came in Week 9 when he torched his former team, the Titans, for 373 yards and three touchdowns.