On SI.com: From SI's Jan 21, 2013 issue

About this week's cover

The names are Kaepernick and Flacco, not Manning and Brady. After both quarterbacks led stunning comebacks in the NFL Divisional playoffs, the two unpolished but excellent quarterbacks face even greater pressure going forward. Peter King breaks down what makes these two players special and how they can get their teams two the Super Bowl.

SI Digital

How does one pick against Serena Williams at the 2013 Australian Open? She's won the last two majors plus Olympic gold. She's lost only one match since the 2012 French Open, and, oh, yeah... she has won in Melbourne five times already. She's a shoo-in, right? Go to SI.com for complete coverage from Oz, including Jon Wertheim's daily wrap-ups of all the action and tournament buzz from Courtney Nguyen's Beyond the Baseline blog.

As for the NBA midseason? Try Ben Golliver's take on Dirk Nowitzki: One week after Nowitzki aired his frustration with the Mavericks' outlook, Mark Cuban told his franchise forward that he won't be traded. Finding an ideal trade partner would require a team with deep pockets, a roster that was both ready to win now and able to build its offense around him, and enough assets to make it worth the Mavericks' while. Read more of Golliver's Point Forward blog at nba.si.com.

SI Digital Bonus

With a superfecta performance in Super Bowl VII, the Dolphins drubbed the Redskins 14-7 to remain undefeated and take pro football's biggest prize. Tex Maule writes about those unbeatable 1972 Miami Dolphins after completing what remains the only undefeated season in NFL history.

SI Photos

Already the career leader in wins (656) and games played (1,191), Martin Brodeur also leads all goalies in career shots-against (29,915) and should reach the 30,000 mark this season. For a look at other notable milestones, go to SI.com/photo.

More galleries on SI.com

2013 NHL Milestones

NFL Single-Season Rushing Leaders

Achievements in Sports

Complete NFL Playoff Coverage

Chris Burke breaks down each championship game at the SI NFL blog, Audibles. Can Vernon Davis copy Zach Miller's success against the Falcons? How will the Ravens get the best of Tom Brady again? Keep up with Burke and Peter King for all your NFL Playoffs coverage and the latest of the coaching carousel.

More NFL Coverage on SI.com

Chris Burke: Chip Kelly hire puts all QB options, including Geno Smith, on the table

Chris Burke: Gus Bradley will have a tough time improving the Jaguars

Don Banks: Chip Kelly will shake up the NFC East

Dennis Dillon: Doug Marrone has the right resume to turn around the Bills