Tweets of the week: Maria Sharapova doesn't follow March Madness

Roger Federer's soccer fandom, Caroline Wozniacki's caddying adventures and Andrea Petkovic makes good on her promise to listen to happier music. Here are the best tweets from the week:

Watching #marchmadness for the first time...ok not really watching, it's in the background.
— Maria Sharapova (@MariaSharapova) April 8, 2014

Watch Caroline's sweet putt here.

Watching @FC_Basel #sonervous #OT pic.twitter.com/SrNps1lNOv
— Roger Federer (@rogerfederer) April 10, 2014

Federer's hometown team lost 5-3 to Valencia in the Champions League quarterfinals.

We can go to town or baby if you'd rather I'll take you for a ride on my big green tractor #JasonAldean
— Madison Keys (@Madison_Keys) April 9, 2014

I played pretty horrible til 61 51. I still thought I could of made a come back if Mr. Umpire didn't decide to make his own rules at 5/4..
— ivo karlovic (@ivokarlovic) April 7, 2014

Its good to take a dump after a match like this. Feel much better.. #toilettweeting
— ivo karlovic (@ivokarlovic) April 7, 2014

Tough match... even tougher twitter messages... seriously, if you have nothing nice to say don't say anything... #abuse #norespect #bullies
— Alla Kudryavtseva (@AllaK11) April 9, 2014

Awful match 2day! Bogotá nice place but impossible for me to play my tennis at 2600m of altitude! Couldn't put a ball in! #lessonfornexttime
— Kristina Mladenovic (@KikiMladenovic) April 7, 2014

I was an avg ATP player, my TV skills R subject 2 a wide range of opinions, BUT my successful diaper changes this am, undeniably excellent!
— Justin Gimelstob (@justingimelstob) April 11, 2014

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