Lehecka struck eight aces and converted four of eight break chances to secure the first Top 3 win of his career.
Yuki Bhambri and Andre Goransson secured a comfortable victory in the first round of the Indian Wells Masters, defeating David Pel and Fabrice Martin in straight sets.
Spain bounced back from an opening singles defeat on Thursday to beat the Czech Republic 2-1 and reach the Davis Cup semi-finals for the first time in six years where they will face Germany, who earned their own comeback win over Argentina.
'The only reason I come back is because of the love you (fans) give me'
Novak Djokovic outclassed American Taylor Fritz to set up a high-voltage semi-final showdown against Carlos Alcaraz.
Rohan Bopanna teamed up with Belgium's Sander Gille to enter the quarterfinals of the ATP 250 Boss Open in Stuttgart
World number three Carlos Alcaraz was left ruing a mistake that let Jiri Lehecka off the hook in the third set and allowed the Czech to fight back and claim a 6-3, 3-6, 6-4 victory in the Qatar Open quarter-finals on Thursday.
Twice defending champion Jessica Pegula crashed out of the Canadian Open after losing to Anastasija Sevastova 3-6, 6-4, 6-1 in the third round on Friday, while six-times major winner Iga Swiatek marched on with a dominant 6-2, 6-2 win over Eva Lys.
A solitary break in the eighth game was all Djokovic needed to take the opening set, as the 37-year-old looked in total control despite playing well within himself in perfect conditions at a packed centre court.
American lucky loser Reilly Opelka put up an intense battle to stun top seed Daniil Medvedev 7-6(5), 7-6(5) and reach the semi-finals in Den Bosch on Friday.
Defending champion Jannik Sinner swept past Felix Auger-Aliassime 6-0, 6-2 on Thursday to reach the Cincinnati Open semi-finals, the world number one extending his hardcourt winning streak to 25 matches.
Iga Swiatek was the latest top player to suffer an upset loss in Montreal as the Wimbledon champion
Carlos Alcaraz, who advanced to the last eight in Cincinnati for the third time, has now won 36 of his last 38 matches.
Australian broadcaster Tony Jones has apologised to Novak Djokovic and fans of the Serbian for comments he made on TV on Friday night.
Andrey Rublev reached the final of the Qatar Open on Friday with a 7-5, 4-6, 7-6(5) win over Canada's Felix Auger-Aliassime, and will meet Jack Draper in the decider after the Briton beat Czech Jiri Lehecka.
Teenager Andreeva shows her mettle, Pegula advances at French Open
Novak Djokovic became the oldest man to reach the quarter-finals at all four Grand Slams in a single season.
Carlos Alcaraz, who triumphed at Queen's a few weeks before claiming his first Wimbledon title in 2023, extended his winning streak to 18 matches.
Carlos Alcaraz was pushed all the way by fellow-Spaniard Jaume Munar in a thrilling contest
'We both played high level but I stayed so calm and I really enjoyed the battle.'
Carlos Alcaraz avoided another scare at the Queen's Club ATP 500 event as the top-seeded Spaniard dispatched France's Arthur Rinderknech with little fuss 7-5, 6-4 to reach the semi-finals on Friday.
Draper, 23, has won only two matches in three previous visits to Wimbledon. But the past 12 months has seen him evolve from a player regarded as physically fragile to a beast of the courts with the weapons to challenge the very best.
World number one Jannik Sinner delivered a flawless performance to pulverise Czech Jiri Lehecka in straight sets in little more than 90 minutes on Saturday.
Medvedev outlasts Zverev to reach Halle final
Carlos Alcaraz got his grasscourt campaign up and running with a 6-4, 7-6(4) victory over Australian Adam Walton
Top seed Carlos Alcaraz overcame Croatia's Marin Cilic to reach the round of 16 at the Qatar Open.
No. 1 seed Carlos Alcaraz of Spain was pushed to three sets before finishing off Dutch wild card Botic van de Zandschulp in the first round of the ABN AMRO Open.
Top seed Carlos Alcaraz withstood a charge from qualifier Luca Nardi for a 6-1, 4-6, 6-3 victory in the second round of the Qatar ExxonMobil Open in Doha on Wednesday.
'I've been a little bit shocked this week with how players have been treated by the broadcaster.'
Three-time champion Novak Djokovic battled past Frenchman Corentin Moutet in a match that lasted more than three hours on Thursday.
Aryna Sabalenka took a step closer to a first trophy of the year before her Australian Open title defence begins later this month.
The Dutchman collapsed on the court after converting his sixth match-point to end an absorbing three hour, seven minute affair under sunny skies on Stadium One court.
During Nine's broadcast, Jones had mocked Djokovic and his fans who were out in force cheering the Serb.
Former champion Naomi Osaka was sent packing from Indian Wells after losing in straight sets to Colombia's Camila Osorio.
Carlos Alcaraz reached his second Australian Open quarter-final on Sunday when his opponent Jack Draper retired injured when trailing 7-5, 6-1.
Djokovic saved three breakpoints in stifling conditions to go 5-4 up but lost the opening set in a tough tiebreak as Opelka cranked up his serve
Novak Djokovic and Nick Kyrgios enthralled fans on their debut as a doubles team on Monday
Nadal held his nerve as he was tested by the 91st-ranked Argentine
Carlos Alcaraz swatted aside a swarm of bees and world number six Alexander Zverev to reach the semi-finals at Indian Wells.
Top seed Carlos Alcaraz cruised into the quarter-finals of the Queen's Club Championships.