Kyle Boller's rookie-year per-game averages (2003):
Joe Flacco's first game (Sept. 7, 2008):
Also keep in mind that Boller's stats are divided over 11 games, and in one of those games he only threw one pass and then got hurt. Without that game his averages for completions, attempts and yards per game go up about 10 percent.
Of course, the real difference is in these numbers:
Boller: 1.27 turnovers per game
Flacco: No turnovers