Martin Klizan reaches his first quarter-final of 2019 by defeating Daniel Brands in Sofia.

Martin Klizan defeats Alexei Popyrin in three sets at the Sydney International on Sunday.

Martin Klizan defeats Stan Wawrinka in three sets at the St. Petersburg Open on Saturday.

Martin Klizan defeats #NextGenATP Canadian Denis Shapovalov in St. Petersburg to reach his second tour-level semi-final of the season.

Martin Klizan, the 2012 St. Petersburg champion, wins his first match at the tournament since by defeating Evgeny Donskoy in straight sets.

Martin Klizan extends his record in ATP World Tour finals to 6-0 with his victory against Denis Istomin in Kitzbühel.

Martin Klizan improves to 6-0 in tour-level finals after beating Denis Istomin to win the Generali Open on Saturday.

Martin Klizan powers past Denis Istomin in straight sets to win the Generali Open on Saturday.

Martin Klizan saves two match points in the second set before defeating Dusan Lajovic to reach his first tour-level semi-final of the year.

Martin Klizan continued his recent run of form, beating Mirza Basic in three sets to reach the BMW Open by FWU quarter-finals on Wednesday.

Former champion Martin Klizan defeats 2011 finalist Florian Mayer in the BMW Open by FWU first round on Monday.

Martin Klizan defeats Novak Djokovic in three sets to reach the Barcelona Open Banc Sabadell third round on Wednesday.

Martin Klizan lifts his first trophy in two years, prevailing at the Indian Wells Challenger.

Qualifier Martin Klizan eliminated home favourite Alexander Donski in straight sets without facing a break point on Tuesday.

Second seed Novak Djokovic advances to the Wimbledon second round after Martin Klizan retires due to injury.

Slovakian Martin Klizan advances to face Andy Murray in the second round at Roland Garros.

It was standing room only as #NextGenATP Korean Hyeon Chung took on Martin Klizan in quarter-final action.

Martin Klizan had his quarter-final match with #NextGenATP Korean Hyeon Chung suspended due to darkness.

Martin Klizan beats Nicolas Kicker on Tuesday to advance to the second round in Munich.

Defending champion Martin Klizan tops Fernando Verdasco in three sets on Tuesday in Rotterdam.

Martin Klizan meets fans in Sofia on Wednesday.

David Marrero y Martin Klizan ganaron el 82% de puntos al servicio en el final de dobles en Umag.

Martin Klizan posa con el trofeo de campeón este domingo en Hamburgo en el German Tennis Championships 2016.

Martin Klizan no cedió un set en su camino al título.

Seventh seed Martin Klizan raced through his second-round bout with wild card Louis Wessels 6-1, 6-1.