Filip Krajinović Filip Krajinović (, ; born 27 February 1992) is a Serbian former professional tennis player. He achieved a career-high singles ranking of world No. 26 on 23 April 2018.

was the defending champion but chose not to defend his title.

Juan Ignacio Londero Juan Ignacio Londero (; born 15 August 1993) is an Argentine tennis player. Londero reached his career-high ATP singles ranking of world No. 50 in November 2019 and his highest ATP doubles ranking of world No. 186 in March 2020. Career Londero ...

won the title after defeating

Hugo Dellien Hugo Dellien Velasco (; born 16 June 1993) is a Bolivian professional tennis player. He has a career-high ATP singles ranking of No. 64, achieved on 1 August 2022, becoming the highest-ranked Bolivian since Mario Martínez (No. 60) in November ...

3–6, 7–5, 6–4 in the final.

Seeds

Draw

Finals

Top half

Bottom half

References

Main DrawQualifying Draw
{{DEFAULTSORT:2018 Marburg Open - Singles Marburg Open - Singles

2018 Singles Eighteen or 18 may refer to: * 18 (number) * One of the years 18 BC, AD 18, 1918, 2018 Film, television and entertainment * ''18'' (film), a 1993 Taiwanese experimental film based on the short story ''God's Dice'' * ''Eighteen'' (film), a 2 ...