Monday's play at the Monte Carlo Masters saw Daniil Medvedev pull level with Roger Federer for wins this season as top seeds Novak Djokovic and Rafael Nadal learned the identity of their second-round opponents.
Djokovic, champion at this event in 2013 and 2015, will take on Philipp Kohlschreiber after the German cruised past Taro Daniel 6-1 6-3.
Nadal, meanwhile, is an 11-time winner in Monte Carlo – including in each of the past three years – and the second seed faces a showdown with compatriot Roberto Bautista Agut, who came from behind to oust John Millman 3-6 6-1 6-1.
David Goffin, Marco Cecchinato and Diego Schwartzman were Monday's other notable winners as the ATP's biggest names enjoyed opening-round byes.
MEDVEDEV MATCHES FEDERER
A 6-1 6-1 thrashing of Joao Sousa saw Medvedev chalk up his 18th win on the ATP Tour this season, the joint-most alongside Federer.
The Russian broke five times en route to a dominant victory and can now look forward to meeting Radu Albot in round two.
"It was a good match. Of course, it is not easy to start the first match on clay," said Medvedev. "You want to see how your practices have been going [and if] they worked out. In this moment I am happy with my performance but looking forward to the next matches because it is only the start."
FOGNINI FIGHTS BACK
Things were looking bleak for Fabio Fognini against Andrey Rublev as the 13th seed found himself a set and 4-1 down in the second and staring early elimination in the face.
And the world number 18 had to summon all his battling qualities in game six, saving five break points as Rublev failed to claim a 5-1 advantage that would surely have put the contest to bed.
Buoyed by that escape, Fognini embarked on a run of winning six games out of seven to force a decider, where a solitary break in game three set up a 4-6 7-5 6-4 victory and a place in the second round.
JAN-LENNARD STRUTS HIS STRUFF AGAINST BIRTHDAY BOY SHAPOVALOV
Another man to come from behind and reach the last 32 was Jan-Lennard Struff, who dumped out world number 20 Denis Shapovalov 5-7 6-3 6-1.
Struff broke his opponent twice at the end of the second to stay alive in the tournament and dominated the final set, dropping just one game as Shapovalov failed to mark his 20th birthday with a win.
His reward is a second-round meeting with Grigor Dimitrov, who defeated Matteo Berrettini on Sunday.
|Liverpool acting like a club that belongs at the top – Henderson|
|Spurs can´t get caught up in Nuggets crowd - DeRozan issues warning ahead of Game 7|
|Zabaleta expects Juventus-linked Guardiola to stay at City|
|Thunder skipper Shane Watson retires from BBL|
|The big Friday Premier League quiz|
|Ravens bring Hollywood to Baltimore, Giants reach for Jones - The best and worst picks of the NFL Dr|
|Bauer leads Indians past Astros|
|Five potential destinations for Josh Rosen after Cardinals pick Kyler Murray|
|Cardinals make Kyler Murray first pick as Giants spring Daniel Jones surprise|
|Copa Libertadores Review: Palmeiras, San Lorenzo punch tickets into last 16|
|Celtics Hall of Famer Havlicek dies aged 79|
|Cardinals´ Kyler Murray: I want to be best that ever played|
|Spurs top Nuggets to force Game 7|
|Ince ´sick and tired´ of nostalgic Solskjaer|
|Haskins falls to Redskins in NFL Draft|
|Stallings, Mullinax lead rain-affected Zurich Classic|
|Klopp never expected United to get a result in Manchester derby|
|Bosa ´excited to go kick butt´ with 49ers|
|Baker Mayfield leads congratulations to top draft pick Kyler Murray|
|Giants take Eli Manning successor in Daniel Jones|
|New York Giants fan wins season tickets for 100 years|
|Zidane hails ´fearless´ Diaz|
|Chiefs star Mahomes graces Madden 20 cover|
|Nick Bosa goes second to 49ers in NFL Draft|
|Cardinals take Kyler Murray first overall in NFL Draft|
|´I don´t really care what people say´ – Westbrook on criticism|
|Lakers star LeBron James tops NBA jersey sales|
|This Week in US Sports: NHL playoffs putting NBA postseason to shame|
|Madrid have turned down €180m for Asensio, says agent|
|Man City ´fighting like animals´ to hold off Liverpool – Fernandinho|
|Zidane annoyed with Getafe stalemate|
|Gasperini targets ´extraordinary´ finish to season for Coppa finalists Atalanta|
|Singleton to leave Worcester for Sarries|
|Liverpool beat Manchester City on penalties in FA Youth Cup final|
|Defending champ Pliskova dumped out in Stuttgart|
|NHL apologises to Golden Knights for controversial penalty call|
|Smith one clear at Trophee Hassan II|
|Getafe 0 Real Madrid 0: Zidane´s men held by Champions League chasers|
|Atalanta 2 Fiorentina 1 (5-4 agg): Gasperini´s men through to Coppa Italia final|
|Struff stuns Tsitsipas to set up Nadal quarter-final|
|Adebayor claims racism motivated infamous celebration|
|Parag, Archer sparkle for Royals as KKR lose again|
|Silva looking to secure Europa League qualification|
|AC Milan condemn alleged monkey chants aimed at Kessie and Bakayoko|
|Kings, NBA launch joint investigation into Luke Walton sexual assault allegations|
|Muller urges Bayern to ´seal the deal´|
|Mourinho killed everyone at Real Madrid, even Ronaldo - Adebayor|
|Hamilton understands Leclerc´s difficult Ferrari role|
|Sarri fined £8,000 after admitting misconduct charge|
|Mbabu to join Wolfsburg on four-year deal|
|Nadal overcomes Ferrer and rain in Spain|
|AC Milan defender Calabria suffers compound leg fracture|
|Vettel defiant over F1 world title hopes|
|Former England boss Eriksson ´honoured´ by Scotland links|
|England World Cup hopeful Billings suffers injury blow|
|Klopp jealous of Salah meeting Game of Thrones star ´Mrs. Targaryen´|
|England´s Watson back in Bath XV after 13 months out|
|Farah rejects Gebrselassie claims as feud continues|
|There can only be one! - Klopp says City and Liverpool both deserve title|
|Osaka avenges Hsieh defeat to stay number one|
|Croft field goal sees Storm edge out Warriors|
|You´re never favourites against Barcelona, says Liverpool boss Klopp|
|Manchester United´s Lukaku reveals Serie A ´dream´|
|Steyn World Cup fright for Proteas|
|His season is a masterpiece – Guardiola lauds Bernardo Silva as one of Europe´s best|
|Curry: Warriors must erase memories of Game 5 loss to Williams-inspired Clippers|
|Gattuso accepts AC Milan ´embarrassed´ by Lazio|
|This game sucked – Thompson laments loss as Warriors miss chance to advance|
|It´s ´vital´ Tottenham keep Eriksen – Rose|
|Roosters regain ANZAC Day Cup|