Eighth seed Machac, who won gold in mixed doubles at the Paris Olympics, became the third player from his country to win an ATP 500 title, following Tomas Berdych and Radek Stepanek.
Coco Gauff forgot to bring her rackets to the court but reminded her rivals of her French Open title ambitions with a commanding win while Daniil Medvedev lost his composure on a cold and blustery Tuesday as he crashed out in the opening round.
The world number five Spaniard has won 15 straight matches since returning from a foot issue that sidelined him for nearly six months last year.
Novak Djokovic was shocked by Botic van de Zandschulp 6-2, 3-6, 6-1 in the second round of Indian Wells on Saturday as the Serbian suffered an early exit at the hands of a tournament lucky loser for a second consecutive year.
Alexander Zverev received a suspended eight-week ban for smashing his racket against the umpire's chair at last month's ATP 500 event in Acapulco, for which he was expelled from the tournament.
Third seed Andrey Rublev suffered a first round exit after his Qatar Open title, losing to qualifier Quentin Halys 3-6, 6-4, 7-6(5) at the Dubai Open on Tuesday.
Zverev deserved to be thrown out for umpire abuse, says Nadal
After shaking hands with the opponents, the 24-year-old Zverev, ranked third in singles, approached the umpire's chair and hit it repeatedly before heading towards his courtside seat, upset over a line call during the match earlier.
Medvedev squandered a two-set lead against Nadal in their previous meeting in the Melbourne final in January, allowing the Spaniard to clinch his 21st Grand Slam title.
Stefanos Tsitsipas has pledged to donate $1000 for every ace he hits during the Mexican Open tennis tournament to help with the reconstruction of Acapulco following the devastation caused by Hurricane Otis last October.
Nadal will have the chance to claim the top spot back on Monday if he wins his third title in Acapulco
Battle-scarred Argentine Juan Martin del Potro clinched his 21st career title with a 6-4, 6-4 win over Kevin Anderson in the Mexican Open final in Acapulco on Sunday.
Nick Kyrgios saved his best performance of a brilliant week for last as the Australian stunned second seed Alexander Zverev 6-3, 6-4 to win the Acapulco International in Mexico on Saturday for his fifth career ATP title.
World number one Novak Djokovic eased past Greek Stefanos Tsitsipas 6-3, 6-4 to lift his fifth Dubai Tennis Championships title on Saturday, extending his unbeaten start to the 2020 season. Djokovic has now won 21 straight matches, including 18 this season, having already lifted the inaugural ATP Cup with Serbia and a record-extending eighth Australian Open title last month.
The two rising tennis stars Eugenie Bouchard and Grigor Dimitrov played an exhibition game on a floating court.
Fourteen-time Grand Slam champion Rafael Nadal has entered the quarter-finals of the ATP Acapulco tournament with a comprehensive straight-sets victory over Italy's Paolo Lorenzi.
Bulgaria's Grigor Dimitrov edged out South Africa's Kevin Anderson 7-6 (7-1), 3-6, 7-6 (7-5) in a three-hour slugfest to claim his second career title with victory in the Acapulco International final on Sunday.
Andy Murray rallied from a set and a break down against Gilles Simon to advance to his first semi-final since he won last year's Wimbledon title while top seed David Ferrer retired with a thigh strain at the Acapulco International on Thursday.
Bulgaria's Grigor Dimitrov edged second seed Andy Murray in a semi-final clash at the Acapulco International that finished in the early hours of Saturday morning to set up a title showdown against South Africa's Kevin Anderson.
Rafael Nadal beat new world number one Daniil Medvedev 6-3, 6-3 in a rematch of their Australian Open clash to storm into the final of the ATP 500 event in Acapulco on Friday.
Victory over Medvedev meant Alcaraz became the youngest man to win the Indian Wells and Miami Open titles, a feat dubbed the 'Sunshine Double'.
Spanish teenager Carlos Alcaraz came from behind to beat world number one Novak Djokovic 6-7(5), 7-5, 7-6(5) to reach the Madrid Open final, where on Sunday he will face Alexander Zverev after the German defeated Stefanos Tsitsipas 6-4, 3-6, 6-2.
Next up for the 35-year-old will be another American in 39th-ranked Tommy Paul with a potential semi-final clash against top-seeded Russian Daniil Medvedev, who he defeated in the Australian Open final from a two-sets deficit.
Serena Williams said she would have faced far harsher punishment had she engaged in similar behavior to Zverev
Tennis strategy analyst O'Shannessy, who was a part of Djokovic's team for both times the two players met, reveals...
Men's singles winner set to receive five times more the amount as compared to the women's champion.
His top ranking came on the same day that Russia launched a full-scale invasion of Ukraine that began with air and missile strikes on military facilities before troops and tanks rolled across borders from the north, east and south.
18-year-old Carlos Alcaraz of Spain became the youngest to clinch an ATP 500 title at the same event on Sunday when he defeated Diego Schwartzman in the final of the Rio Open.
Bopanna and Aisam, known as 'Indo-Pak Express' will play together since they last competed at the ATP 250 event in Shenzen in 2014.
'Of course I am happy to reach No. 1. It was my goal since I was young and especially my goal in the latest times.'
Russia's Daniil Medvedev defeated Benoit Paire of France 6-3, 6-4 in the first round of the Abierto Mexicano tournament in Acapulco on Tuesday to get his quest for the world number one ranking off to a winning start.
'If I'm honest I have to say that I'm not here for a miraculous comeback like on other occasions. I know the limitations I have physically, and we'll see later.'
Rafael Nadal has pulled out of the Indian Wells and Miami Open tournaments after aggravating the leg injury that forced him out of the Australian Open in January, the Spanish world number two said on Friday.
The Indian trio of Zoravar Singh Sandhu, Kynan Chenai and Birendeep Sodhi could not make it through to the six-man final round of the competition, failing in the qualification round.
Roger Federer was made to work hard by Fernando Verdasco before beating the Spanish veteran 6-3, 3-6, 6-3 on Wednesday to reach the quarter-finals of the Dubai Duty Free Tennis Championships.
Rediff.com brings you glimpses of the violent protests that has rocked Acapulco in southern Mexico.
Australian Nick Kyrgios served like a demon to bounce Serbia's world number two Novak Djokovic out of the quarter-finals of the Acapulco International with a 7-6(9), 7-5 victory on Friday.
Nick Kyrgios needs to improve his fitness to have a chance of winning Grand Slams, former world number one Jim Courier said on Wednesday.
Top seed Rafael Nadal pulled out of this week's Mexican Open in Acapulco after aggravating the leg injury that forced him out of the Australian Open last month.
Designer Pia Pauro's Mexican-themed line was all about Acapulco glamour on Day One of the LFW.