The Serb, who won his 18th major at the Australian Open in February, insisted his focus now is on surpassing Federer's haul of 20 Grand Slams - a record he shares with Rafael Nadal.
Madrid Open: Alexander Zverev seals title with comeback win over Matteo Berrettini for Roland Garros boost
Zverev recorded his third consecutive top-10 victory this week, having eliminated five-time Madrid champion Rafael Nadal and Dominic Thiem to reach the final.
Madrid Open: Matteo Berrettini beats Casper Ruud to reach his first Masters 1000 final, will face Alexander Zverev
Alexander Zverev defeated Dominic Thiem in straight sets in the semi-finals to reach the final.
Bopanna and Shapovalov went down 6-4 3-6 10-5 against their German opponents to crash out of the ATP Masters 1000 tournament.
Nadal is hoping to clinch a 14th Roland Garros title and record-setting 21st major in the French capital next month.
Madrid Open: Alexander Zverev stuns Rafael Nadal in straight sets, sets up semi-final clash with Dominic Thiem
Zverev's impressive straights-set win at the Caja Magica earns him a meeting with Dominic Thiem in the Madrid semis, in what will be a repeat of last year's US Open final, which was won by Thiem.
Nadal's path to a possible sixth Madrid title was cleared of second seeded Daniil Medvedev and fourth-seeded Monte Carlo champion Stefanos Tsitsipas who were both shock third round losers.
The Indo-Canadian duo won their round of 16 match 6-3 6-4 on Wednesday.
Despite winning the opening set on a tie-breaker, Zverev, the 2017 and 2018 Munich champion, bowed out 7-6 (7/5), 5-7, 3-6 after Ivashka of Belarus converted his first match point.
In sum, no 20-something appears poised to wrest the mantle from the 30-somethings who have dominated the sport for so long.
Thirteen aces among her 36 winners helped Osaka overcome a slew of unforced errors of her own and set up a third-round meeting with Serbian qualifier Nina Stojanovic, who surprised Yulia Putintseva
Tsitsipas, who was coming off semi-final appearances at the Australian Open and Rotterdam, was denied a sixth ATP trophy.
Mexican Open: Alexander Zverev battles past Dominik Koepfer, earthquake to set up final with Stefanos Tsitsipas
Zverev was shaken but not unnerved by an earthquake in the second set of his 6-4, 7-6 (7/5) victory over fellow German Dominik Koepfer.
The world number five from Greece will take on Italian qualifier Lorenzo Musetti, who defeated fifth-seeded Bulgarian Grigor Dimitrov 6-4, 7-6 (7/3).
Shapovalov, who enjoyed a winning debut in Dubai thanks to a 6-1, 6-3 second-round success over German big-server Jan-Lennard Struff on Tuesday, says being confined to a hotel room at every tournament due to the Covid-19 restrictions in place can take a mental toll on the players.
World number three Medvedev was the top seed for this week's tournament following his run to the Australian Open final but was dumped out 7-6 (7/4), 6-4 in just over 90 minutes by Serbian Lajovic, currently ranked 27th.
German Zverev was seeded third in the tournament but was surprised by 43rd-ranked Bublik in just one hour, 19 minutes.
The 20-time Grand Slam champion was due to be playing in Rotterdam for the first time since 2009.
"I'm not the guy that's going to find excuses on that or going to complain about what happened, no. Just accept. I never considered myself an unlucky person at all," Rafael Nadal said after his ouster.
Australian Open 2021: Novak Djokovic beats Alexander Zverev, into ninth semi-final; Serena Williams sets up Naomi Osaka last-four clash
Djokovic pulled himself together and pulled out the victory, reaching his ninth semi-final at Melbourne Park by eliminating No 6 seed Zverev 6-7 (6), 6-2, 6-4, 7-6 (6)