Johannus Monday

Johannus Monday (born 22 January 2002) is a British tennis player. He has a career high singles ranking of No. 212, achieved on 27 October 2025. He has a career high doubles ranking of No. 192 achieved on 28 August 2023.

Early life Monday was born in Kingston upon Hull, and brought up in nearby Cottingham. He began playing tennis at the age of four years-old. He attended St Mary's College and, from 2015, boarded at Merchiston Castle School in Edinburgh.

In 2020 he began studying political science at the University of Tennessee on a tennis scholarship. the pair received wildcards for the 2023 Wimbledon Championships. He was also given a wildcard into the men's qualifying singles and beat Mili Poljicak before pushing the experienced Radu Albot to three sets. In the doubles, he and Fearnley beat Andre Goransson and Ben McLachlan in the opening round before losing to Matthew Ebden and Rohan Bopanna.

He won three consecutive singles titles on the ITF tennis tour in October 2024.

He began 2025 with another title at that level in Sunderland before adding a fifth in six months in Bakersfield, United States in March 2025, defeating American Alex Rybakov in the final in straight sets to seal the title.

In June 2025, Monday was awarded a wildcard to make his major tournament main-draw singles debut at Wimbledon, where he lost to 13th seed Tommy Paul in the first round.

In September 2025, Monday combined with Patrick Harper to win the doubles title at the Columbus Challenger, defeating George Goldhoff and Theodore Winegar in the final.

In October 2025, Monday reached his first Challenger final in singles, at the Sioux Falls Challenger. He lost to fifth seed Patrick Kypson in three sets.

ATP Challenger and ITF Tour finals

Singles: 10 (8 titles, 2 runner-ups) LegendATP Challenger (0–2)ITF WTT (8–0)Finals by surfaceHard (8–2)Clay (–)

Doubles: 12 (10 titles, 2 runner-ups) LegendATP Challenger (4–0)ITF WTT (6–2)Finals by surfaceHard (8–2)Grass (2–0)