Fitness concerns for Djokovic in opening round win

IMAGE: Novak Djokovic celebrates winning first round match against Jerzy Janowicz of Poland on Day 1 of the 2016 US Open. Photograph: Al Bello/Getty Images Novak Djokovic opened the defence of his......

Here's why Djokovic failed in his pursuit of Grand Slam sweep

Djokovic admits 'private issues' derailed his pursuit of calendar-year Grand Slam IMAGE: Novak Djokovic and wife Jelena Ristic. Photograph: Stuart C. Wilson/Getty Images World number one Novak......

Karlovic hits record 45 aces for spot in Halle semis

Ivo Karlovic. Photograph: Scott Barbour/Getty Images Croatian Ivo Karlovic hit a record 45 aces en route to beating third seed Tomas Berdych and reach the Halle Open semi-finals on Friday. The......

Lopez apologises to injured ball-boy for low blow

Feliciano Lopez of Spain speaks to a ball kid that got struck by a serve in his second round match against Adrian Mannarino of France. Photograph: Wayne Taylor/Getty Images Spaniard Feliciano......

Radwanska downs Serena in Hopman Cup final

Serena Williams of the United States congratulates Agnieszka Radwanska of Poland after she won in the women's singles match of the 2015 Hopman Cup. Photograph: Will Russell/Getty Images Agnieszka......