Charles Leclerc has ended Free Practice 2 for the Formula 1 Monaco Grand Prix fastest as Daniel Ricciardo crashed out in the early minutes.
Leclerc built on his strong pace from earlier in the day to sit atop the timesheets in both of the day's sessions, Carlos Sainz second best in the latter just 0.044s down on his team-mate.
The Monaco streets weren't kind to Ricciardo, the Australian clouting the barrier at the Swimming Pool without a time to his name.
Mick Schumacher headed into Free Practice 2 with a new MGU-K and gearbox after Haas identified and resolved the issues which saw the German stop at pit entry in the day's earlier session.
There was a similar issue for Alfa Romeo Sauber, Valtteri Bottas delayed slightly as he joined the session after he managed just two laps in the morning session.
The Finn was among those to head out early, together with 15 other drivers who took to the streets of the Principality as the session opened.
Ferrari sent its two drivers out on the hard tyres, while the balance of the field opted for mediums.
Clear track was at a premium, with the complex from the Swimming Pool through La Rascasse littered with slow moving cars.
Sebastian Vettel had a near miss in the Swimming Pool, taking too much kerb heading into the complex, pitching the Aston Martin sideways.
He somehow survived, picking his way around the sleeping policeman to continue without so much as a scratch on his car.
No sooner did the German escape than Ricciardo was less fortunate, burying the McLaren in the Tecpro barrier exiting the complex.
The Australian suffered oversteer entering the complex, overcorrecting the slide only to be fired into the barrier on driver's left.
The red flag was shown as a consequence, his McLaren having slid down the circuit and pierced a Tecpro barrier, necessitating a nine minute stoppage for repairs.
Most of the remaining runners opted for soft compound tyres as they focused on qualifying simulations once running resumed.
That didn't initially include the Ferraris, both Leclerc and Sainz remaining in the garage.
Sergio Perez was the session's benchmark, having logged a 1:14.001 prior to the interruption.
Fernando Alonso set a 1:13.912s on his qualifying run to briefly go quickest, only for both Max Verstappen and Perez to improve, the latter to 1:13.324s, a 0.7s gain on his earlier lap.
That lasted only until Leclerc, who'd headed out on a set of softs, completed his first qualifying simulation, logging a lap 1:13.125s, 0.199s faster than the previous marker.
He improved further to 1:12.656s, while Sainz slotted in second, though 0.4s slower than his team-mate.
Lewis Hamilton locked up at Mirabeau, skating into the escape road before returning to the pits.
At McLaren, Norris reported brushing the wall at Ste Devout before he toured round for the team to examine the MCL36.
When the qualifying simulations ended, Leclerc was fastest from Sainz, just 0.044s between the Maranello pair.
Perez was up next, 0.379s slower, then Verstappen who was 0.447s off his title rival's pace.
Norris was next best, in front of George Russell in the first of the Mercedes, the Brit seemingly more on top of the set-up than team-mate Hamilton, who was just 12th fastest over a single lap.
With attentions turned to long runs in the final 15 minutes, the order remained unchanged, with Leclerc best from his team-mate to round out a strong opening day for the Scuderia.
The Red Bull pairing looked within touching distance of the front of the field, the leading two teams comfortably clear of the rest of the field.
A final hour of practice continues on Saturday with Free Practice 3 set to commence at 21:00 AEST.
Results: Formula 1 Monaco Grand Prix, Free Practice 2
Pos | Num | Driver | Team | Laps | Time | Diff |
1 | 16 | Charles Leclerc | Scuderia Ferrari | 29 | 1:12.656 | |
2 | 55 | Carlos Sainz | Scuderia Ferrari | 31 | 1:12.700 | +0.044s |
3 | 11 | Sergio Perez | Red Bull Racing | 30 | 1:13.035 | +0.379s |
4 | 1 | Max Verstappen | Red Bull Racing | 32 | 1:13.103 | +0.447s |
5 | 4 | Lando Norris | McLaren F1 Team | 24 | 1:13.294 | +0.638s |
6 | 63 | George Russell | Mercedes-AMG F1 Team | 30 | 1:13.406 | +0.750s |
7 | 10 | Pierre Gasly | Scuderia AlphaTauri | 31 | 1:13.636 | +0.980s |
8 | 14 | Fernando Alonso | Alpine F1 Team | 30 | 1:13.912 | +1.256s |
9 | 5 | Sebastian Vettel | Aston Martin F1 Team | 31 | 1:14.059 | +1.403s |
10 | 22 | Yuki Tsunoda | Scuderia AlphaTauri | 26 | 1:14.134 | +1.478s |
11 | 20 | Kevin Magnussen | Haas F1 Team | 31 | 1:14.239 | +1.583s |
12 | 44 | Lewis Hamilton | Mercedes-AMG F1 Team | 28 | 1:14.267 | +1.611s |
13 | 77 | Valtteri Bottas | Alfa Romeo F1 Team | 27 | 1:14.468 | +1.812s |
14 | 23 | Alex Albon | Williams Racing | 32 | 1:14.486 | +1.830s |
15 | 24 | Zhou Guanyu | Alfa Romeo F1 Team | 22 | 1:14.525 | +1.869s |
16 | 18 | Lance Stroll | Aston Martin F1 Team | 28 | 1:14.623 | +1.967s |
17 | 47 | Mick Schumacher | Haas F1 Team | 32 | 1:14.894 | +2.238s |
18 | 31 | Esteban Ocon | Alpine F1 Team | 33 | 1:15.216 | +2.560s |
19 | 6 | Nicholas Latifi | Williams Racing | 32 | 1:16.276 | +3.620s |
20 | 3 | Daniel Ricciardo | McLaren F1 Team | 2 |