Alexei Popyrin booked his berth into the mens singles quarterfinals of the Ministry of Interior Tennis Challenger, part of the ATP Challenger Tour, being held at the Public Security Officers Club in Gudaibiya.
The 25-year old Australian, who is ranked 91st in the world, recovered from an early stumble to beat his Norwegian opponent Victor Durasovic 1-6, 6-1, 6-4 in their dramatic last-16 round match yesterday (Thursday).
Twenty-nine-year-old entrant Thanasi Kokkinakis, also from Australia, made it through to the quarterfinals after beating Alexandre Muller of France 6-4, 4-6, 6-4 in another neck-and-neck tie.
Jason Kubler completed the Aussie's joy by reaching the quarterfinals thanks to his well-deserved 6-2, 6-3 win over his Polish opponent Daniel Michalski.
The concluding last-16 tie saw Jordan's Abedallah Shelbayh shock favourite and world's 180th Vit Kopriva of the Czech Republic 6-4, 3-6, 6-3 to complete the quarterfinals lineup.
The forth day of the tournament organised by the Bahrain public security club under the umbrella of the Ministry of Interior, also witnessed exciting matches on the last-16 in the men's doubles event.
Romain Arneodo of Poland teamed up with Sam Weissborn of Austria to beat the pair of Victor Durasovic and Otto Virtanen of Finland to secure their place in the quarterfinals.
Finland's Patrik Niklas-Salminen and his teammate Bart Stevens of the Netherlands followed suit, defeating Maximilian Neuchrist and Kaichi Ochida of Japan 6-4, 6-4 to reach the competition's final eight.
Ruben Gonzales of the Philippines and his Brazilian partner Fernando Romboli completed the quarterfinals lineup after a 7-6(4), 6-2.
Roman Jebavy of Czech Republic and Jonny O'Mara of Great Britain teamed up to register a well-earned 6-3, 6-4 victory over Yunseung Chang of South Korea and Marek Gengel of Czech Republic.