question: In the 2013 Banja Luka Challenger – Singles, Aljaž Bedene took the tile beating this player that reached what carrer-hing singles world ranking?
answer: No. 28
context: Title: 2011 Banja Luka Challenger
  Passage: The 2011 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the tenth edition of the tournament which was part of the 2011 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina between 12 and 18 September 2011.
  Title: 2013 Banja Luka Challenger
  Passage: The 2013 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the twelfth edition of the tournament which was part of the 2013 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina from 7 to 15 September 2013.
  Title: 2013 Banja Luka Challenger – Singles
  Passage: Aljaž Bedene took the title, beating Diego Schwartzman 6–3, 6–4
  Title: 2009 Banja Luka Challenger
  Passage: The 2009 Banja Luka Challenger was a professional tennis tournament played on outdoor red clay courts.  It was the eighth edition of the tournament which was part of the 2009 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina between 14 and 20 September 2009.
  Title: 2015 Banja Luka Challenger
  Passage: The 2015 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the fourteenth edition of the tournament which was part of the 2015 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina from 14 to 20 September 2015.
  Title: 2010 Banja Luka Challenger
  Passage: The 2010 Banja Luka Challenger was a professional tennis tournament played on outdoor red clay courts.  It was the ninth edition of the tournament which was part of the 2010 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina between 13 and 21 September 2010.
  Title: Diego Schwartzman
  Passage: Diego Sebastián Schwartzman (] , ] ; born 16 August 1992) is an Argentine professional tennis player competing mainly on the ATP Tour.  He has won one ATP singles title, and reached a career-high singles ranking of world No. 28 in 2017.  He is a clay court specialist, and is noted for his "deadly" return game.
  Title: 2014 Banja Luka Challenger
  Passage: The 2014 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the thirteenth edition of the tournament which was part of the 2014 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina from 8 to 14 September 2014.
  Title: 2012 Banja Luka Challenger
  Passage: The 2012 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the eleventh edition of the tournament which was part of the 2012 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina between 10 and 16 September 2012.
  Title: 2016 Banja Luka Challenger
  Passage: The 2016 Banja Luka Challenger was a professional tennis tournament played on clay courts.  It was the fifteenth edition of the tournament which was part of the 2016 ATP Challenger Tour.  It took place in Banja Luka, Bosnia and Herzegovina from 12 to 18 September 2016.
citations: Diego Schwartzman 2013 Banja Luka Challenger – Singles