National Bank Open, Montreal Day Four Recap

4 days into the expanded Nationwide Financial institution Open and the boys’s draw has already been blown vast open.

Dwelling favorite Félix Auger-Aliassime was pressured to withdraw with a again harm earlier than hanging a ball, whereas prime seed Alexander Zverev, fourth seed Daniil Medvedev and seventh seed Taylor Fritz all suffered shock defeats as one other wave of seeded gamers exited Montreal.

The newest upsets imply simply two of the event’s prime 10 seeds stay standing earlier than the third spherical, a exceptional statistic for a two-week Masters 1000.

João Fonseca continued his rise with a strong win over Stefanos Tsitsipas, Daniel Mérida Aguilar claimed the most important victory of his younger profession, whereas Tallon Griekspoor and Botic van de Zandschulp spearheaded an excellent day for Dutch tennis.

Whether or not it’s the expanded two-week format, the short turnaround after Wimbledon and Washington, or just every week stuffed with impressed underdog performances, Montreal is already trying like a moist squib, which doesn’t assist its debated status as a premier occasion on tour.

Right here’s a have a look at the important thing outcomes and standout matches from day 4 in Montreal.

Day 4 Nationwide Open 2026 Spherical of 64 Outcomes

Winner
Loser
Rating

Tallon Griekspoor
(1) Alexander Zverev
6-7(3), 6-2, 6-4

(30) Matteo Arnaldi
Fabian Marozsán
7-5, 2-6, 6-4

Daniel Mérida Aguilar
(24) Ugo Humbert
6-3, 6-3

Alex Michelsen
(16) Francisco Cerúndolo
6-3, 6-4

(12) Learner Tien
Gaël Monfils (WC)
6-3, 0-6, 6-3

Alexei Popyrin (Q)
(32) Raphaël Collignon
6-4, 6-3

Botic van de Zandschulp
(4) Daniil Medvedev
6-3, 7-6(5)

Hubert Hurkacz (PR)
(25) Alejandro Tabilo
6-4, 7-6(4)

Terence Atmane
(21) Karen Khachanov
6-4, 7-6(3)

(13) Jakub Menšík
Jacob Fearnley (Q)
6-3, 3-6, 6-3

(9) Casper Ruud
Juan Manuel Cerúndolo
6-1, 6-2

(22) João Fonseca
Stefanos Tsitsipas (Q)
7-6(3), 7-5

(31) Zizou Bergs
Sebastián Báez
3-6, 6-3, 6-2

(5) Ben Shelton
Jenson Brooksby
6-3, 7-5

(11) Lorenzo Musetti
Nicolás Mejía (Q)
7-6(8), 6-2

Mariano Navone
(14) Valentin Vacherot
1-6, 6-3, 6-3

(20) Rafael Jódar
Corentin Moutet
4-6, 6-1, 6-3

(18) Arthur Fils
Zachary Svajda
6-4, 3-6, 6-1

Cameron Norrie
(29) Ignacio Buse
6-3, 6-3

Nuno Borges
(26) Tomás Martín Etcheverry
6-4, 6-2

Arthur Rinderknech (23)
Miomir Kecmanović
6-7(5), 6-4, 6-4

Titouan Droguet (Q)
Jaime Faria
7-6(2), 6-2

(17) Tommy Paul
Valentin Royer
6-4, 7-6(5)

Thiago Agustín Tirante
(7) Taylor Fritz
7-5, 6-3

Key Match Recap

Tallon Griekspoor def. Alexander Zverev 6-7(3), 6-2, 6-4

Tallon Griekspoor pulled off one of many greatest upsets of the event, recovering from a first-set tie-break defeat to eradicate prime seed Alexander Zverev.

The Dutchman had arrived in Montreal on the again of a poor run of kind, successful simply one in every of his earlier eight tour-level matches, and given his 2-9 H2H vs Sascha, I didn’t actually see him successful this one.

However then once more, we’re on the Canada Open the place no one actually appears to care in regards to the event, so outcomes typically flip the script, and after watching some highlights of their earlier matches, I realised the 9-2 was slightly flattering, as Griekspoor may simply have gained just a few of these matches.

Towards Zverev, he was the extra aggressive participant for lengthy spells, hanging 20 forehand winners and successful 17 of his 18 approaches to the web.

The third set may have been much more snug, however Griekspoor surrendered a break benefit within the deciding set to permit Zverev again to 4-4, however he held his nerve, breaking instantly earlier than serving out one of many greatest victories of his profession.

Botic van de Zandschulp def. Daniil Medvedev 6-3, 7-6(5)

Botic van de Zandschulp continued the Dutch celebrations by producing one other upset, defeating fourth seed Daniil Medvedev in straight units.

Van de Zandschulp performed one in every of his cleanest matches of the season, mixing tempo and top cleverly to maintain Medvedev uncomfortable all through.

After dominating the opening set, he raced right into a 3-0 lead within the second earlier than the Russian fought again to drive a tie-break.

It was Van de Zandschulp’s ninth profession Prime 10 win and his first since defeating Novak Djokovic at Indian Wells final season.

I didn’t significantly have excessive hopes for Meddy as he was pictured with each knees taped throughout a pre-tournament observe and his kind isn’t something to write down residence about. Neither is his historical past in Montreal, which, after right now, is 4 opening-round losses.

Thiago Agustín Tirante def. Taylor Fritz 7-5, 6-3

Thiago Agustín Tirante claimed one other seeded scalp by knocking out seventh seed Taylor Fritz in straight units.

Fritz by no means regarded snug after successful the Washington title simply 48 hours earlier and required a medical timeout through the second set as his motion visibly deteriorated.

The Argentine performed aggressively with out turning into reckless, struck 19 winners and remarkably misplaced only one level behind his first serve all through the complete match.

João Fonseca def. Stefanos Tsitsipas 7-6(3), 7-5

João Fonseca made a powerful return from his post-Wimbledon break by defeating Stefanos Tsitsipas for the second time in his profession.

The Brazilian managed a lot of the match along with his explosive forehand and regarded set for a routine end earlier than failing to serve out the competition at 5-4 within the second set.

Quite than permitting frustration to creep in, the 19-year-old responded beautifully, successful eight of the following 9 factors to wrap up victory.

A 3rd-round conflict with Casper Ruud needs to be fascinating.

Alex Michelsen def. Francisco Cerúndolo 6-3, 6-4

Alex Michelsen continued his quietly wonderful summer season with one other composed victory, this time eliminating sixteenth seed Francisco Cerúndolo.

The American managed proceedings with aggressive first-strike tennis, taking time away from the Argentine and infrequently permitting him to settle into prolonged rallies.

Michelsen doesn’t obtain fairly the identical consideration as a few of his contemporaries, however his outcomes are of comparable high quality.

Different Notable Outcomes

Casper Ruud made gentle work of Juan Manuel Cerúndolo, whereas Ben Shelton started his title defence with a strong straight-sets victory over Jenson Brooksby.

Hubert Hurkacz continued his encouraging comeback by defeating Alejandro Tabilo, Jakub Menšík ended Jacob Fearnley’s run, Lorenzo Musetti overcame qualifier Nicolás Mejía after a decent opening-set tie-break, and Mariano Navone recovered from a set all the way down to beat Valentin Vacherot.

Elsewhere, Rafael Jódar continued his breakthrough summer season by preventing again to defeat Corentin Moutet, Arthur Fils superior previous Zachary Svajda, Cameron Norrie comfortably beat Ignacio Buse, Nuno Borges maintained his wonderful Montreal document with victory over Tomás Martín Etcheverry, Tommy Paul edged Valentin Royer in two shut units, whereas Arthur Rinderknech outlasted Miomir Kecmanović in three units.

Highlights

Nationwide Financial institution Open 2026 Day 5 Spherical of 32 Matches