SF Chronicle: Five keys to Cal's success

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Jahvid Best: As team's most dynamic and probably most important player, sophomore tailback has to prove he's healthy and can stay that way.

Kevin Riley: Sophomore quarterback can't be looking over his shoulder to see if Nate Longshore is warming up and has to show his arm strength translates into consistency.

Zack Follett: Poster boy for change to 3-4 defense and his fellow linebackers need to show that having an extra playmaker on field is more valuable than extra big body up front.

Freshmen feet: Punter Bryan Anger and kicker David Seawright, both freshmen, have wowed in practice and now have to prove that game days will be no different.

Tree sitters: For Bears to move to next level of recruiting and prestige, they have to get people out of trees to start construction ontraining center.