Britain's Laura Robson had her troubles start back in 2013 at the Canadian Open when she had injured her wrist and soon had to unfortunately have surgery. At the time she was ranked #27. She had the surgery and rehabbed continuously.
She applied for 'protected ranking' to freeze her ranking from the time she had gotten injured but preferred to just go into Challenger events to raise her WTA status. By last year 2015 she had more surgery on her wrist and then took time off missing the 2016 Australian Open.
Along with the Challengers she entered the Indian Wells even. She received a wild card for the Miami Open. Laura's last playing time was with the 2016 US Open qualifying where she'd gotten a wildcard and won three rounds but lost in the first round of the main draw to her countrylady Naomi Broady in three sets.
Now she's recuperating and rehabbing hopefully to be good for the 2017 season to come. Jamie Hampton turned pro in 2009 but after a few years her body started feeling the stress and pulls of a grueling tour. Jamie's career high in 2013 was #24 and she reached the 4th round of Roland Garros.
She missed nearly the entire 2014 season because of hip surgery. Before the surgery she acquired 3 doubles titles but endured later on six surgeries in 18 months - hips, back and shoulder included in the ailments. Jamie's last time on court competition was in the Carlsbad Classic Open of 2015.
Hopefully she will return for the coming 2017 to give the fans an appetizer of her entertaining tennis. Jerzy Janowicz had his highest ranking of the ATP at #14. In 2012, he defeated 5 top 20 players and was the first Polish man to reach the semis of Wimbledon.
The year 2013 wasn't very good for Jerzy as he suffered from back ailments. The following year it was foot injuries and in 2015 and 2016, he'd had his share of knee ailments. He underwent a procedure to treat his patellar tendon rupture in his left knee, a steam cell therapeutic procedure had to be performed.
It failed to heal and he soon dropped to #104 in the ATP rankings. Jerzy's mom even said disappointingly that "There was no improvement, it stood in place and we were devastated...it's unsure when he will return to the court..." With intense rest and rehab he was able to attend the Rio Olympics 2016 but lost in the first round and flew to the States to be in the US Open.
He accomplished a feat many can't do when he took a set from the number one Novak Djokovic. Jerzy says that "My rehab was long because I got injured during last year's US Open and then tried to play through it, at the end of the season which was stupid on my part".
Hopefully 2017 will be good to him to continue on in the sport he loves. Sloane Stephens was ranked #11 in 2013 and last year 2015 was #25. She made the semis at the Australian Open and the quarters at the US Open in 2013.
For Sloane it was her foot that started bothering her and she was able to play up until Day 7 of Wimbledon. It was needed to have intense treatment but she pushed through to make the prestigious Rio Olympics where she lost in the first round to her childhood comrade, Eugenie Bouchard.
She wasn't able to play the US Open this year after Rio and withdrew citing a right foot injury. The 2017 should be big for Sloane if she heals completely from foot ailments that have plagued her for months. Irina Falconi turned pro in 2010 but did the routine Challenger events to raise her rankings on the WTA tour.
She had luck with Shelby Rogers when they clinched the finalist doubles titles at Copa Colsanitas at Bogata but Irina's first title came also at the Copas Open in Bogata, Colombia when she beat Silvia Soler in three sets in singles in April of 2015.
The next month she was ranked #63. She started having foot problems and by the end of August of the next year (2016) surgery was needed. The year 2017 she is hoping will be her comeback year of the new tour season. Alexandr Dolgopolov of the Ukraine did play this year, 2016; at the beginning with the Hopman Cup with countrywoman Elina Svitolina.
He made Wimbledon and beat Evgeny Donskoy in four sets and entered the CitiOpen losing to Sam Querrey at the third round. Toronta, Canada's The Rogers Cup wasn't very lucky for he went to only the first round and lost in straight sets to Donald Young.
Alex has a condition called Gilbert's Syndrome which affects his liver, blood and causes fatigue and repeated bouts of jaundice. It is a hereditary disease and with extreme travel makes the condition flare up. He admits that "I don't remember the last time I was affected but despite taking measures...it sometimes just happens". He is resting and hopes to be in good enough health to start the 2017 tour season well in stride.