We continue our third annual best and worst case scenarios for every player on the Green Bay Packers roster. Today we take a look at the cornerbacks. Make sure to come back tomorrow when analyze the inside linebackers.

Charles Woodson

• Best case scenario: Woodson shows no signs of aging. He's been one of the best cornerbacks in the NFL ever since he came to the Packers, and he continues that trend in 2009. Woodson has more than five interceptions, and just like every year, he creates at least one turnover that seems to swing the entire momentum of the game over to the Packers. He is a first team All-Pro, which is even more impressive than the Pro Bowl.
• Worst case scenario: Woodson begins his downhill slide. He'll start every game he's healthy enough to play, but his performance has the Packers wondering if it's time for change of the guard next season. His decline in play also makes Mike McCarthy consider playing him at safety once again.

Al Harris

• Best case scenario: Harris picks up where he left off last season when he seemed to play better without his spleen. He also erases any doubts that he'll struggle in Dom Capers' 3-4 zone coverage schemes. Never known for a high amount of interceptions, Harris gets more INTs than expected when he's able to read quarterbacks more with his eyes now facing the backfield.
• Worst case scenario: The combination of advancing age and struggles in zone coverage creep up on Harris like the Grim Reaper. He starts all season long, but he is out of the Packers' plans for 2010 in favor of Tramon Williams.

Tramon Williams

• Best case scenario: Williams takes the title of most improved player of the off-season and runs with it. Even as the team's nickel cornerback, he plays a pivotal role in the success of the new 3-4 defense. He racks up just as many interceptions as last season and cements himself as a starter in the NFL next season, he simply won't be denied no matter who's in front of him.
• Worst case scenario: Williams is continually picked on by opposing quarterbacks as the lesser of three evils. He allows too many completions to the players he's covering. And even though it's not entirely his fault, fans are clamoring to audition new nickel back by the end of the season. 

Will Blackmon

• Best case scenario: Blackmon hold off Pat Lee as fourth cornerback in the pecking order. He's still more valuable as a kick returner, but at least when he's forced to play on the defensive side of the football, he's not a disappointment.
• Worst case scenario: Being a halfway decent return man is the only thing keeping Blackmon as a part of the team. He's fallen behind Pat Lee and Jarrett Bush and just flat out gets beaten more often than not on defense. He rarely sees the field on defense during the regular season as a result.

Pat Lee

• Best case scenario: The second year pro is light years ahead of where he was as a rookie. He still finds playing time tough to come by in a crowded defensive backfield, but his play in the pre-season screams, "I deserve to be on the field." He makes one play during the regular season that all of a sudden makes Cheesehead Nation take notice.
• Worst case scenario: The Packers made a mistake. They never should have drafted him. Rookie Brandon Underwood plays his butt off, and Lee rides the pine all year long. He's lucky if he ever is part of the 45-man gameday active roster.

Brandon Underwood

• Best case scenario: The sixth round draft choice out of Cincinnati makes the team and even plays a little bit of special teams. He has a hard time seeing playing time outside of the pre-season, but just making the roster was an achievement.  Underwood makes it known that he could be a potential starting-caliber cornerback in the NFL.
• Worst case scenario: His back strain from lifting weights lingers. He struggles to even find the playing field let alone play well. He's put on either the practice squad or injured reserve, getting another chance to prove himself next year.

Joe Porter

• Best case scenario: Porter got off to a good start in training camp with a couple of eye-catching plays and he continues it with a couple more interceptions while covering the team's best wide receivers. Somehow, someway, Porter is the 53rd man kept on the team forcing a guy like Underwood to practice squad status.
• Worst case scenario: Porter is cut in a numbers game. He performs well for a player without expectations, but he just can't surpass the players ahead of him on the depth chart. He still has practice squad eligibility and that could be an option.

Trevor Ford

• Best case scenario: The undrafted rookie from Troy makes it past the first round of cuts. The most he can hope for is getting a little extra time in an NFL training camp in hopes of catching the eye of maybe another team and gaining a little more experience.
• Worst case scenario: Trevor, meet the UFL. UFL, meet Trevor.

Jarrett Bush

• Best case scenario: Even though Bush is now considered more of a safety, he shows he can still play cornerback in a pinch. He makes the team by providing depth in the defensive backfield and playing much better special teams than he did a year ago.
• Worst case scenario: The Packers decided to match Bush's contract offered to him by the Titans as a restricted free agent, but maybe they shouldn't have. They end up cutting him anyway.