Our weekly Friday look at newsmakers in the tennis world.
It's been a bumpy ride for the 2008 French Open champion, who's struggled with form and fitness since spending 12 weeks at No. 1 last year. Earlier this week, after dropping out of the top 10 for the first time in nearly two years, the 21-year-old Serb parted ways with coach Craig Kardon.
Text: Bryan Armen Graham/SI.com
Photo: Jessica Kluetmeier/SI