THREE STATS

The Ravens were one of four teams that finished the preseason 4-0. And now the Ravens, Minnesota Vikings and Philadelphia Eagles are undefeated so far this season. (The Houston Texans dropped out after Thursday’s 27-0 loss at the New England Patriots.) Seven teams — including the Ravens in 2000 — have converted unblemished preseason marks into Super Bowl titles.

Here are three stats to keep in mind before today’s 1 p.m. game between the Ravens and Jaguars at EverBank Field in Jacksonville, Fla.