The

ATP Challenger Tour The ATP Challenger Tour, known until the end of 2008 as the ATP Challenger Series, is a series of international men's professional tennis tournaments. The Challenger Tour events are the second-highest tier of tennis competition, behind the ATP T ...

, in

2018 File:2018 Events Collage.png, From top left, clockwise: The 2018 Winter Olympics opening ceremony in PyeongChang, South Korea; Protests erupt following the Assassination of Jamal Khashoggi; March for Our Lives protests take place across the United ...

, was the secondary professional

tennis Tennis is a racket sport that is played either individually against a single opponent ( singles) or between two teams of two players each ( doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball ...

circuit organized by the ATP. The 2018 ATP Challenger Tour calendar comprised 159 tournaments, with prize money ranging from $50,000 up to $150,000. It was the 41st edition of challenger tournaments cycle, and 10th under the name of Challenger Tour.

Schedule

This was the complete schedule of events on the 2018 calendar, with player progression documented from the quarterfinals stage.

January

February

March

April

May

June

July

August

September

October

November

Statistical information

These tables present the number of

singles Singles are people not in a committed relationship. Singles may also refer to: Film and television * ''Singles'' (miniseries), a 1984 Australian television series * ''Singles'' (1992 film), written and directed by Cameron Crowe * ''Singles'' ...

(S) and doubles (D) titles won by each player and each nation during the season. The players/nations are sorted by: 1) total number of titles (a doubles title won by two players representing the same nation counts as only one win for the nation); 2) a singles > doubles hierarchy; 3) alphabetical order (by family names for players).