Michael Crabtree has described the Seattle Seahawks' defense as "pretty good" ahead of the NFC championship game this weekend.
The NFC West champions made 44 sacks, 17 forced fumbles and 28 interceptions during the 2013 regular season.
The San Francisco 49ers wide receiver told reporters: "It's a good football team. We've got some good guys, too. So it's going to be a good game.
"I know nothing about the best cornerbacks in the league, I just know teams. We're playing the Seattle Seahawks and hopefully we come [away] with a win. We're going hard.
"[The defense] move around. They're pretty good. You study [the league's interceptions leader Richard Sherman] and you study the defense, the overall defense. A lot of guys play coverages, it ain't just man-to-man the whole game."
During their two regular season games, the 49ers and Seahawks both won their home fixture.
