The 2015 Miami Open kicked off on Monday , but some of tennis ' finest found time to visit the Seaquarium before taking to the court , where they swam with dolphins in the 30 degree heat . Among the group were Juan Martin Del Potro , American Sam Querrey , Feliciano Lopez , Sabine Lisicki and France 's Alize Cornet . The group posed in front of the dolphins , before jumping into the water themselves to interact with the sea creatures , a privilege that would usually cost $ 210 ( £140 ) to the average visitor . Some of the world 's best tennis stars , including Sabine Lisiki ( second left , top ) , swam with dolphins in Miami . Juan Martin Del Potro was one of the male players in attendance ahead of the 2015 Miami Open in Florida . Lisicki , ranked 21st in the world , smiled for the cameras as she interacted with a dolphin at the Seaquarium . The tennis stars , most of whom will be in action at Crandon Park Tennis Center on Wednesday , kissed and swam with the dolphins at the venue in Key Biscayne , Florida . Del Potro , who has been plagued by injuries , dropping to 616 in the world rankings , will kick off his Miami Open campaign on Thursday against Canadian Vasek Pospisil , while Sam Querrey - on home turf - will face Victor Estrella Burgos in his first round match . On the women 's side of the draw , Sabine Lisicki , fresh from her Indian Wells semi-final appearance , receives a bye in the first round and will face either Julia Georges or Jana Cepelova in the second round in Miami . Sam Querrey , Del Potro , Nenad Zimonjic , Ryan Harrison , Steve Johnson and Feliciano Lopez ( l-r ) in attendance . Zimonjic , former Doubles World No 1 , plants a kiss on a dolphin at the Miami Seaquarium on Tuesday . Andrea Hlavackova of the Czech Republic , ranked 206 in the world , smiles as she is pulled along by a dolphin . Some of the world 's best will compete at the tournament , which runs until April 5 in Florida . Andy Murray will play , but faces a tough run as he is in the same half of the draw as Rafael Nadal . The British No 1 is set to face Donald Young , who he recently beat in the Davis Cup , or Yen-Hsun Lu in his first match of the tournament . Elsewhere , world No 1 Novak Djokovic will also compete , while on the Ladies side of the draw , top three seeds Serena Williams , Maria Sharapova , and Simona Halep are all in action . Feliciano Lopez will look to take a step closer to the top 10 in the world with a good performance in Miami . France 's Alize Cornet shakes hands with a dolphin ahead of the Miami Open in Crandon Park Tennis Center . Monica Puig , who faces Irina Falconi in the first round on Wednesday , is pulled along by a dolphin .
The 2015 Miami Open began on Monday and will run until April 5 . Some of the world 's best players will be in action at the tournament . Hide Caption