Le Mans 24 Hours winner Pier Guidi snared the top spot aboard the #51 Ferrari 499P Le Mans Hypercar by just 0.003s over Ye’s Porsche 963 LMDh in a 90-minute session that was red flagged with a little over two minutes left on the clock.
Pier Guidi logged a best effort of 1m37.533s in the car he shares with James Calado and Antonio Giovinazzi, which had been 0.076s behind Ye in Calado’s hands before Pier Guidi’s improvement.
Ye headed the best of the Penske-run factory Porsches driven by Michael Christensen, which slotted into third ahead of Mike Conway’s #7 Toyota GR010 HYBRID despite causing an early full course yellow.
Last year’s Monza pole winner, the Glickenhaus-Pipo 007 LMH, split the two Toyota LMHs in fifth with Olivier Pla setting its fastest time.
Sebastien Buemi was sixth in the #8 Toyota, just edging out the #50 Ferrari driven by Nicklas Nielsen and Laurens Vanthoor’s #6 Penske Porsche.
Richard Westbrook put the sole Ganassi-run Cadillac V-Series.R LMDh ninth, while Nico Muller rounded out the top 10 in the best of the two Peugeot 9X8 LMHs at the scene of the programme’s WEC debut last season.
The Swiss, a second off the pace, was trailed by his team-mate Jean-Eric Vergne in the sister #93 Peugeot and Esteban Guerrieri aboard the Vanwall Vandervell 680.
The 13-car Hypercar field was completed by the new Proton Competition Porsche, making its first appearance in the WEC. Its best time, 1.774s off the pace, was set by Harry Tincknell.
Robert Kubica headed a WRT 1-2 in the LMP2 division. A 1m40.356s for the Pole’s #41 ORECA-Gibson 07 put the two-time Italian Grand Prix podium finisher ahead of the sister #31 entry of Ferdinand Habsburg by 0.205s.
Albert Costa was third fastest in the Le Mans-winning Inter Europol Competition ORECA ahead of Charles Milesi in the #36 Signatech-Alpine entry and Gabriel Aubry’s Vector Sport example.
The GTE Am field was led by Davide Rigon’s #54 AF Corse Ferrari 488 GTE Evo.
The Italian logged a best time of 1m47.939s to beat the #60 Iron Lynx Porsche 911 RSR-19 of Alessio Picariello by 0.107s.
Ben Barker’s #86 GR Racing Porsche completed the top three.
Series debutante Efrin Castro spun at the first Lesmo to cause the red flag aboard Project 1’s Porsche.
WEC Monza FP1 Results:
| Cla | # | Drivers | Car | Class | Time | Gap |
|---|---|---|---|---|---|---|
| 1 | 51 |
 Alessandro Pier Guidi  James Calado Antonio Giovinazzi
|
Ferrari 499P | HYPERCAR | 1'37.533 | |
| 2 | 38 |
 Antonio Felix da Costa Will Stevens  Ye Yifei
|
Porsche 963 | HYPERCAR | 1'37.536 | 0.003 |
| 3 | 5 |
 Dane Cameron  Michael Christensen  Frédéric Makowiecki
|
Porsche 963 | HYPERCAR | 1'37.824 | 0.291 |
| 4 | 7 |
Mike Conway  Kamui Kobayashi  Jose Maria Lopez
|
Toyota GR010 - Hybrid | HYPERCAR | 1'37.841 | 0.308 |
| 5 | 708 |
Romain Dumas Olivier Pla Nathanael Berthon
|
Glickenhaus 007 | HYPERCAR | 1'37.917 | 0.384 |
| 6 | 8 |
 Sébastien Buemi  Brendon Hartley Ryo Hirakawa
|
Toyota GR010 - Hybrid | HYPERCAR | 1'37.951 | 0.418 |
| 7 | 50 |
Antonio Fuoco  Miguel Molina Nicklas Nielsen
|
Ferrari 499P | HYPERCAR | 1'38.033 | 0.500 |
| 8 | 6 |
Kevin Estre  Andre Lotterer  Laurens Vanthoor
|
Porsche 963 | HYPERCAR | 1'38.066 | 0.533 |
| 9 | 2 |
Earl Bamber Alex Lynn Richard Westbrook
|
Cadillac V-Series.R | HYPERCAR | 1'38.116 | 0.583 |
| 10 | 94 |
Loic Duval Gustavo Menezes Nico Müller
|
Peugeot 9X8 | HYPERCAR | 1'38.533 | 1.000 |
| 11 | 93 |
Paul di Resta Mikkel Jensen Jean-Eric Vergne
|
Peugeot 9X8 | HYPERCAR | 1'38.664 | 1.131 |
| 12 | 4 |
Esteban Guerrieri Tristan Vautier JP De |
Vanwall Vandervell 680 | HYPERCAR | 1'39.121 | 1.588 |
| 13 | 99 |
Gianmaria Bruni Harry Tincknell Neel Jani
|
Porsche 911 RSR - 19 | HYPERCAR | 1'39.307 | 1.774 |
| 14 | 41 |
Rui Andrade  Robert Kubica Louis Deletraz
|
Oreca 07 | LMP2 | 1'40.356 | 2.823 |
| 15 | 31 |
 Sean Gelael  Ferdinand Habsburg  Robin Frijns
|
Oreca 07 | LMP2 | 1'40.561 | 3.028 |
| 16 | 34 |
Jakub Smiechowski Fabio Scherer Albert Costa
|
Oreca 07 | LMP2 | 1'40.605 | 3.072 |
| 17 | 36 |
Matthieu Vaxiviere Julien Canal Charles Milesi
|
Oreca 07 | LMP2 | 1'40.671 | 3.138 |
| 18 | 10 |
 Ryan Cullen  Matthias Kaiser Gabriel Aubry
|
Oreca 07 | LMP2 | 1'40.710 | 3.177 |
| 19 | 22 |
Frederick Lubin Philip Hanson Ben Hanley
|
Oreca 07 | LMP2 | 1'40.869 | 3.336 |
| 20 | 35 |
 Andre Negrao  Memo Rojas Olli Caldwell
|
Oreca 07 | LMP2 | 1'40.905 | 3.372 |
| 21 | 63 |
Doriane Pin Mathias Beche  Daniil Kvyat
|
Oreca 07 | LMP2 | 1'41.285 | 3.752 |
| 22 | 9 |
 Filip Ugran Bent Viscaal Andrea Caldarelli
|
Oreca 07 | LMP2 | 1'41.364 | 3.831 |
| 23 | 28 |
David Heinemeier Hansson Pietro Fittipaldi Oliver Rasmussen
|
Oreca 07 | LMP2 | 1'41.576 | 4.043 |
| 24 | 23 |
Josh Pierson Giedo van der Garde Oliver Jarvis
|
Oreca 07 | LMP2 | 1'41.712 | 4.179 |
| 25 | 54 |
Thomas Flohr Francesco Castellacci Davide Rigon
|
Ferrari 488 GTE EVO | LMGTE AM | 1'47.538 | 10.005 |
| 26 | 60 |
Claudio Schiavoni Matteo Cressoni Alessio Picariello
|
Porsche 911 RSR - 19 | LMGTE AM | 1'47.645 | 10.112 |
| 27 | 86 |
Michael Wainwright Riccardo Pera Benjamin Barker
|
Porsche 911 RSR - 19 | LMGTE AM | 1'47.846 | 10.313 |
| 28 | 77 |
Christian Ried Mikkel Pedersen Julien Andlauer
|
Porsche 911 RSR - 19 | LMGTE AM | 1'48.198 | 10.665 |
| 29 | 56 |
Guilherme Oliveira Efrin Castro Matteo Cairoli
|
Porsche 911 RSR - 19 | LMGTE AM | 1'48.219 | 10.686 |
| 30 | 57 |
Takeshi Kimura Scott Huffaker Kei Cozzolino
|
Ferrari 488 GTE EVO | LMGTE AM | 1'48.328 | 10.795 |
| 31 | 85 |
Sarah Bovy Michelle Gatting Rahel Frey
|
Porsche 911 RSR - 19 | LMGTE AM | 1'48.456 | 10.923 |
| 32 | 21 |
Julien Piguet Simon Mann Ulysse De Pauw
|
Ferrari 488 GTE EVO | LMGTE AM | 1'48.466 | 10.933 |
| 33 | 33 |
Ben Keating Nicolas Varrone Nick Catsburg
|
Chevrolet Corvette C8.R | LMGTE AM | 1'48.694 | 11.161 |
| 34 | 83 |
Luis Perez Companc Lilou Wadoux Alessio Rovera
|
Ferrari 488 GTE EVO | LMGTE AM | 1'48.742 | 11.209 |
| 35 | 25 |
Ahmad Al Harthy Michael Dinan Charles Eastwood
|
Aston Martin Vantage AMR | LMGTE AM | 1'49.119 | 11.586 |
| 36 | 777 |
Satoshi Hoshino Casper Stevenson Tomonobu Fujii
|
Aston Martin Vantage AMR | LMGTE AM | 1'49.498 | 11.965 |
| View full results | ||||||
