1. ESPN ScoreCenter

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2. Yahoo! Fantasy Sports – Football

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3. RunKeeper

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4. theScore Mobile

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5. FOX Sports Mobile
FOX Sports brings you the most comprehensive sports app available. Why download multiple apps for each of your favorite sports, teams, your local sports market, plus apps to listen to sports radio? The FOX Sports app does all of this for free!
6. CBS Sports
CBS is streaming some live college games — one football and basketball game per week — to the iPhone via its new CBS Sports: College app
7. Bleacher Report: Sports News
Few sports sites push out as much content as Bleacher Report, and this popular app lets you winnow it all down to what’s most relevant to your teams and interests. But the app also pulls content from other sites, blogs, newspapers and Twitter to keep you in the know.
8. MLB.com At Bat
Beloved by many sports fans, MLB.com At Bat is Major League Baseball’s official app. It lets you stream games, track stats, access highlights, listen to radio broadcasts and follow your favorite teams and players.
9. Nike Training Club
Nike Training Club offers a range of workouts to choose from, whether you’re looking to target certain areas or go on a full body regimen, modeled after celebrity and pro athlete fitness routines. Add incentive through digital rewards and social sharing, too.
10. Hudl Technique
Hudl Technique is a new breed of apps for coaching. It allows you to record the athlete doing a specific skill and lets you watch it back in slow motion. Not only that, it allows you to have two videos side by side and compare. You can write notes of the video and scribble your tips down. It also allows you save and send video clips online.