As we mark Twitter's fifth anniversary, it's a good time to acknowledge the social media site's influence on the sports landscape. Every NBA, MLB, NHL and NFL franchise has a Twitter presence and its impact on news has been profound, as SI.com's Jon Wertheim reports in this story. For SI.com's inaugural Twitter 100, we polled more than 50 Sports Illustrated staffers -- from reporters to writers to editors -- who are hard-core Twitter users and asked them which feeds they considered essential to their daily routine for finding news, information and entertainment from the sports world. We gave them one guideline: You could not choose anyone associated with SI or our main Twitter feed (@SINow). After weeks of debating the endless possibilities, we've whittled down the list to our top 100, which we present in alphabetical order (click here to view by sport).
*Of course, we know this list is subjective and we want hear from you about who we left out and where we screwed up. Weigh in with your thoughts here.
The eccentric former All-Star tweets everything from pictures of himself planking to live play-by-play of his blind dates.
If you want to read full transcripts from postgame news conferences, ASAP Sports is your source.
Arthur has sent more than 49,000 tweets on basketball, politics and pretty much every other subject.
The 12-time PGA Tour winner has a sharp wit and retweets terrific golf-related content including videos.
The most detailed analysis of baseball statistics on Twitter.
Sharp-tweeting writer keeps her followers updated on the latest in pro football.
The Talented Mr. Roto is a must-follow source for fantasy news -- and the occasional ode to his beloved Howard Stern Show.
Bilas combines his immense knowledge of the game with strong, unfiltered opinions and humor. But will he ever follow anyone?
He may be a fourth-line grinder, but Bissonnette is the most entertaining hockey player on Twitter.
Boren, the paper's social media editor for Sports, is a great source for staying abreast of the latest news, especially involving D.C. teams.
The former cap guy for the Packers and the president of the National Football Post is a must-source for the business of the NFL.
Breer has his ear to the ground for all things labor and NFL transactions.
The feed of John Infante, a compliance officer at Colorado State, is the Twitter authority on all things related to NCAA infractions.
Proposing to Lady Gaga? Check. Calling ex-girlfriends evil? Check again. The Juiced author's feed is a never-ending funhouse of unexpected and often surreal activity.
One of the first golfers to embrace Twitter, the entertaining Cink has developed a huge army of followers.
Nobody monitors relief aces like Tim Dierkes. The perfect feed for racking up points in the saves category.
The authority on the intricacies of the NBA collective bargaining agreement. His feed will be busy for a while.
The 11-time Olympic medalist is also an amateur cook and loves to tweet about urban farming.
David Stern's favorite owner delivers championship-worthy TwitPics and rants (some of which have been fine-worthy).
Champ-turned-promoter loves talking boxing with the sport's power brokers and fans in equal measure.
The occasionally foul-mouthed DiBella pulls no punches with his candid dispatches on the sweet science and current events.
He's new to Twitter, but the Djoker is hooked. The Wimbledon champ and new world No. 1 tweets candid photos and funny one-liners.
From political opinions to his live-tweeting of being pulled over by the police at a traffic stop, Dockett offers a kaleidoscope of amusement.
If you love the draft, you must follow site founder and editor Jonathan Givony.
Dreger is the first to know everything in the hockey world -- or at least it seems that way.
Dudley is well known in the basketball social media world for his JMZ twitter videos -- funny clips of his teammates that he posts during road trips.
The NBA's leading scorer actively engages fans and broke the news of his five-year extension with the Thunder on his account.
A combination of analysis and quirky tidbits, Dwyer's Ball Don't Lie blog is a must-read for basketball junkies.
These Bristol statheads tweet great factoids after big events.
The college football writer delivers a steady stream of interesting tidbits throughout the day.
Great tweets and photos on her burgeoning family (she and Giants minor league pitcher Casey Daigle have two sons: Diesel Dean and Ace Shane).
You want quality volume? The recruiting expert has tweeted more than 34,000 times.
The All-Pro receiver is one of the best at interacting with fans and followers.
A mixture of news and opinion, the colleges writer is a master at getting under the skin of certain fan bases (especially Kentucky's).
The NFL veteran offers honesty (including his own political bent) from inside the locker room.
Sure, there's plenty of self-promotional MMA stuff on the feed, but nobody breaks bigger NFL stories.
A huge presence in the NASCAR blogging/social media world, Gluck organizes tweet-ups at Cup races. Among those who have attended: NASCAR chairman Brian France, Hall of Famer Bobby Allison, Jeff Gordon and Kyle Busch's wife, Samantha Sarcinella.
The newsbreaker is a must-follow for recruiting and college coaching information.
Whether it's slamming Sean Penn or baseball's umpires, the outspoken skipper is always entertaining.
Tiger's former swing coach offers lifelines to frustrated hackers as well as insight into Woods and other players.
The boisterous racer mostly uses his account to tweak his opponents (Kyle Busch, most recently).
The midfielder gives soccer fans an entertaining taste of what it is like playing abroad.
The most active NFL owner on Twitter, Irsay is an amusing stream of consciousness, from music to football to all things in between.
Jones tweets openly about her social life and responds often to fans.
The digital guru obsessively tweets (more than 40,000 since he joined) on all things basketball.
Katz is ESPN's premier college basketball reporter. Also knows Obama.
Once August comes around, look to Kay for all your Premier League soccer needs.
Perhaps the most active Sprint Cup driver on Twitter. Regularly converses with fans and has even engaged in debates with media.
The LPGA's most prolific tweeter riffs on life, love, technology, music and, occasionally, golf.
The bruising Love is one of basketball's most honest tweeters. On future teammate Ricky Rubio playing in America: "I'll believe it when I see it."
The man behind the site's sports blog is a great source for unexpected and cool stories.
Whether he's sending TwitPics of winning betting slips, name-checking rapper friends (50 Cent! Gucci Mane!) or linking to impromptu webcasts on Ustream, Mayweather is unafraid to put his crazy life on full display.
The U.S. Open champion isn't prolific, but he posts fun pictures and doesn't censor his charming, goofy, fun-loving personality.
A respected Canadian hockey journalist, McKenzie breaks oodles of news and brings a great insider's take of the game. His Twitter tag: The Hockey Insider.
The basketball-centric account covers the 24 mid-major conferences.
With its up-to-the-minute roster news, this feed is essential for those obsessed with their fantasy team.
Morey gives refreshing opinions beyond the typical PR banalities; he's the only NBA GM who actively tweets.
LoMo has hilarious R-rated tweets. If you don't want that, well, as the second-year player has tweeted, don't follow him.
The 23-year-old American chess Grandmaster tweets about chess and poker. What more could you want?
The flamboyant wideout has turned his feed into a promotional tool for his non-football stunts.
The premier source for gay sports news, photos and videos.
Parker presents an honest and amusing glimpse into the life of a WNBA superstar.
The former Atlanta Journal-Constitution sports writer is one of the definitive sources on Twitter for women's sports news.
One of the few college football coaches who tweets, JayPa loves sharing photos of life in Happy Valley.
She's ranked No. 11, but Petkovic is our No. 1 when it comes to WTA players on Twitter.
The power-hitting Phillips has a 2.0 goal: He wants to be the Chad Ochocinco of baseball tweeters.
He's considered one of the sport's most authoritative reporters.
The Ryder Cupper from England can be defensive, self-indulgent and sometimes cranky, but he's rarely boring.
Named after a real-life pitcher from the 1800s, this "dapper gent" gives his raunchy, 19th-century views on baseball events.
The bleached-blonde, gum-chomping, fun-loving midfielder has delivered on and off the pitch during the World Cup. After Stu Holden gave her team a shout-out, Rapinoe tweeted: "Cheer your pretty face off!!!!"
Rogan shares his insight and opinions on all things Octagon. Don't let the veteran comic's irreverent and sarcastic front fool you: The guy knows his stuff.
Few are as plugged in to baseball as Rosenthal, who tweets at least 20 times a day.
Rovell offers plenty of interesting nuggets and photos (especially if you like ballpark food), as well as the occasional self-aggrandizing tweet.
Want to feel smarter? Start following this Harvard grad, IOC member and one of the greatest women's hockey players ever.
The feed features a great collection of opinionated writers.
Professional wrestling's first "Internet Champion" has used social media to become one of WWE's fastest-rising stars.
Schefter is one-stop shopping for all things NFL. "Filed to ESPN" is his favorite tweet.
Anonymity allows this player to supply his candid thoughts on the soccer world. @WhoisTSF is dedicated to trying to deduce his identity.
ESPN.com's alpha dog is worth the follow. Unless you have an irrational hatred for Boston sports teams.
When he isn't riding a wave, the surfing icon is constantly on Twitter.
American journalist Ives Galarcep is a plugged-in source of news and rumors on the pitch.
Along with his colleague Adrian Wojnarowski, Spears' feed is a terrific aggregate of NBA news and commentary, especially on potential trades.
The feed features current and past articles posted several times a day.
Gabe Feldman provides analysis of the ever-increasing melding of sports and the law.
Letterman's head writer and executive producer devotes most of his Twitter time to cracking jokes about sports. You'll be laughing.
Stark is a terrific source for breaking baseball news (especially on the Phillies) as well as a go-to page for periodic trivia questions.
Stein tweets less than his colleagues, but what he delivers is always pertinent and interesting information.
The talented sophomore retweets nasty posts about himself, and has the most refreshingly honest feed of any college athlete.
If you are looking for a wired tennis journalist, look no further than the Northern California-based Matt Cronin, who runs this account.
A bulldog reporter who breaks big stories across college sports.
The ATP veteran from Serbia tweets about classic literature and does a mean video impersonation of Novak Djokovic.
The nom-de-Twitter of Michael Schur, the co-creator of NBC's Parks and Recreation and the Fire Joe Morgan blog, Mr. Tremendous provides hilarity on baseball and other sports issues.
The always-outspoken White offers abrasive opinions and engages fans. Can't imagine @nflcommish telling followers to "e mail and tweet ESPN for f***in up the results, not me."
The fun-loving Whitney always speaks his mind. Sample tweet: "Not many things are more satisfying than seeing someone fly by you on the highway only to see them pulled over a mile up the road."
The young footballer posts candid pictures from the English Premier League team's training ground, retweets his fans and likes to whinge when things at Arsenal aren't going quite to plan.
The All-Star left-hander is not your typical athlete: He is a science-fiction fanatic who lives a straight-edge lifestyle.
The writer will be a must-read when the 2012 London Olympics come around.
The well-connected Wojnarowski is often first with news from around the league.
The editor of the Puck Daddy blog, Wyshynski delivers NHL fans a daily smorgasbord of news.