Serena Williams' celebrated pairs vocation has likely reached a conclusion

 Credit-Social Media

 after she and her sister Venus fell in straight sets to the Czech team of Linda Nosková and Lucie Hradecká

 Credit-Social Media

  in the principal round of the US Open at Arthur Ashe Stadium in New York.

 Credit-Social Media

 The 23-time huge homerun singles and 14-time pairs champion is as yet set to play against Australia's Ajla

 Credit-Social Media

 Tomljanović in the third round of the singles draw on Friday

 Credit-Social Media

  Venus Williams lost in the principal round on Tuesday.

 Credit-Social Media

 Thursday night could have been the last counterpart for Serena and Venus as a pairs group

 Credit-Social Media

 Credit-Social Media

  The Czech Republic pair of Nosková, 17, and Hradecká, 37, high level to the subsequent round, winning 7-6(5), 6-4.

 Credit-Social Media