Blake, who posted an atrocious quarterback rating of 41.8, finished 11 of 24 passing for 109 yards and an interception. In the final three quarters, he completed six throws for 77 yards.
"You know me, pretty open and pretty direct, but don't be the dumb son of a bitch to ask me about execution [on offense] right now," Billick said.
To tack on two field goals, the Ravens' offense needed help.
Boulware recovered McNair's fumbled snap at the Titans' 21 that set up Matt Stover's 26-yard field goal, increasing the first-quarter lead to 10-0.
After Tennessee closed to 10-6 on a couple of field goals, the defense stepped up again late in the third quarter, when rookie safety Chad Williams made a one-handed interception off a deflection. The Ravens moved 31 yards on six plays and Stover hit a line-drive 43-yarder into the swirling wind to put the Ravens ahead 13-6 with 2:25 left in the third quarter.
"It was pretty ugly," Stover said. "You had to hit it strong. When I did, I came a little too quick and hit it low. I thought I pulled it left. But the good Lord blessed me on that one."
The Ravens started showing life offensively in the fourth quarter, when they began to run the ball exclusively with Jamal Lewis, who had 65 of his 95 yards in the final period. But with a play-action pass play called, Blake had thought he had audible-ized to a run and handed the ball off to a surprised Lewis, which led to a fumble.
The Titans converted that turnover to inch within 13-12 with 4 1/2 minutes left in the game. They had to settle for a 21-yard field goal after McNair overthrew an open Derrick Mason in the end zone.
But without two injured starters - linebacker Ray Lewis and cornerback Chris McAlister - the Ravens' defense still managed to stop the Titans on their final drive. After crawling to the Tennessee 33-yard line, McNair had a pass batted down by cornerback Gary Baxter and saw his final throw dropped by Frank Wycheck.
"For our guys to respond was as impressive defensively as anything we've done since I've been here," Billick said.
Now, with the Cincinnati Bengals on the horizon, the Ravens feel like a win over an old foe has given them new hope in their last-ditch run to the playoffs.
"It's a great big win for us," Blake said. "Think about it: We have five wins under our belt now, and we have Cincinnati next week. Hopefully, we can come out of there and be .500 and we'll see what happens with four games left."