2014 Canadian Formula 1 Grand Prix - First free practice

16:33
We will be back for second practice, which begins at 2pm local time (GMT -4)
16:32
Stay tuned to the website for a full report, plus the latest news and photos
16:32
Vettel is next up, but a sizeable chunk back on the top three
16:31
Alonso remains on top for Ferrari, ahead of Mercedes duo Hamilton and Rosberg
16:30
The chequered flag comes out, bringing FP1 to an end
16:29
We're into the final minute of the session
16:26
He also goes straight on at the final chicane
16:26
Replays show Vettel running wide at the hairpin
16:26
Sutil reports low grip over the radio
16:24
Not many improvements being made as the tyres continue to degrade
16:21
Hamilton told to focus on lift and coast and gear selection
16:19
The McLaren driver did well to dart out of the way
16:19
Replays show Button narrowly avoiding a bird on track
16:19
We believe that Vergne's problem is battery-related
16:18
16:17
Alonso sits 16 thousandths clear of Hamilton as we approach the final ten minutes
16:17
Massa has joined him on the sidelines with an ERS pump failure
16:17
Vergne is out of his car and out of the session
16:13
Hamilton abandons what would have been a strong lap after locking up at Turn 10
16:11
Alonso goes quickest, clocking a 1:17.238
16:10
Finding a compromise between speed and downforce is a constant battle
16:09
Sauber has changed the rear wing on Sutil's car
16:08
Just over one tenth of a second separating the top three at present
16:08
Rosberg improves, but stays in third position
16:04
Replays show Rosberg locking up and running wide at Turn 8
16:04
16:03
Chilton runs wide and clatters the kerbs at the final chicane
16:03
Alonso now splits the Mercedes duo with an improved lap
16:02
Alonso is their nearest challenger and the last man in the 1m17s bracket
16:02
Hamilton responds to Rosberg, retaking the top spot on 1:17.254
16:00
Bianchi limps back to his garage, where mechanics begin their assessment
16:00
Rosberg moves to the front with a 1:17.922
15:59
The team suggests that it could have been a track-rod failure
15:59
Bianchi is moving again, as he attempts to bring the car back to the pits
15:58
Replays confirm a sizeable contact, resulting in rear-end damage
15:57
It looks as though he has clipped the wall at Turn 4
15:57
Bianchi has come to a halt in his Marussia
15:54
Grosjean asks race engineer Ayao Komatsu to stop talking through corners
15:52
He is told that his tyre temperatures are a little low at the moment
15:52
It's the American's first FP1 appearance of the season
15:52
Rossi is currently holding 21st position, ahead of Ericsson in the sister Caterham
15:50
McLaren expect to be more competitive here, given the emphasis on engine power
15:50
Magnussen and Button have improved to fourth and fifth respectively
15:47
It's caught lots of drivers out so far today
15:46
Kvyat takes to the run off area at Turn 8
15:46
Rain is a genuine threat for this afternoon's second outing
15:46
The skies appear to be getting darker as the session progresses
15:43
Magnussen joins his fellow rookie on track
15:42
Kvyat breaks the silence in his Toro Rosso
15:42
Ferrari team boss Marco Mattiacci gets a mid-session update in the garage
15:40
The Finn reported a loss of straight line speed earlier in the session
15:39
Plenty of working going on at the rear of Raikkonen's Ferrari
15:37
We should see teams comfortably past the 300 km/h mark as the event develops
15:37
Button currently tops the speed trap, hitting 296 km/h in the McLaren
15:34
15:34
Hamilton still leading the way from team-mate Rosberg
15:32
Teams must now hand back the extra sets of tyres
15:30
All 22 drivers are back in the pits, as we pass the 30-minute mark
15:31
Gutierrez has finally clocked his first time of the day
15:29
He complains of rear graining over the radio
15:28
Hulkenberg has another moment, this time at the final chicane
15:28
Alonso sits third, four tenths further back
15:28
Rosberg is half a tenth down in second
15:28
Hamilton has worked his way down to a 1:18.088
15:27
The Finn is back in the pits for an investigation
15:27
His engineer tells him that there was some "knocking"
15:26
Raikkonen complains of power loss on the back straight
15:26
Alonso has a scare at Turn 3, but manages to hold on
15:25
Bottas does the same in his Williams
15:25
Vettel carries too much speed into the final chicane and takes to the run off
15:25
We're expecting plenty of excursions as the dust and dirt takes time to clear
15:24
Vettel is the next to run straight on at the first corner
15:24
Rosberg improves to make it a Mercedes 1-2
15:23
Gutierrez is the only driver yet to post a time
15:22
It's a 1:18.997 from the Mercedes driver, who then runs wide at the first corner
15:22
Hamilton's second lap of the session takes him to the top of the timesheets
15:21
No shortage of confidence for the Australian...
15:21
Ricciardo gets extremely close to Turn 4 exit wall
15:21
He recovers without major drama
15:21
Replays show Hulkenberg spinning at Turn 8
15:20
Massa edges clear on a 1:19.575
15:20
Magnussen now breaks into the 1m19s
15:19
The Venezuelan will be hoping for a much smoother weekend after recent criticism
15:19
Maldonado brought out the yellow flags for a brief moment by running wide at Turn 8
15:17
Grosjean slots in behind Magnussen on the timesheets
15:16
Magnussen improves by more than two seconds on his next lap
15:14
Magnussen is the first to post a time, lapping in 1:23.249
15:12
Magnussen's engine is fired up and the Dane returns to the track
15:10
A period of silence as the teams prepare for their first full runs
15:08
We can thus expect to see the highest straight line speeds of the season so far
15:08
Teams have produced and applied specific low downforce packages for this weekend's event, due to the high speed nature of the Circuit Gilles Villeneuve
15:06
If you have any questions, you can get in touch via the interactive Facebook panel on the right-hand side of this page and through our Twitter handle @GPUpdate
15:05
Remember, you can get in touch with our live reporting team throughout the session
15:04
15:03
All 22 drivers have ventured out within the first five minutes
15:02
Flow-vis paint all over the back of the Ferraris
15:01
Plenty of cars following for early install laps
15:01
Massa is the first driver out on track
15:00
FP1 gets underway in Montreal!
14:58
These will be handed back to tyre supplier Pirelli after the cut-off point
14:58
As per the current regulations, the drivers will get an extra set of the harder compound tyre for the first half an hour of the opening 90-minute session
14:55
He will be lapping in place of regular driver Kamui Kobayashi
14:55
There is one driver change for FP1, with Alexander Rossi getting a run in the Caterham
14:51
They are controlled by a single detection point, situated just after Turn 9
14:51
The first activation area begins just before Turn 12, with the second after Turn 14
14:49
In terms of DRS, there are two zones in place this weekend, as per last season
14:49
As a reminder, Pirelli has brought its Super Soft and Soft tyres to Canada
14:47
Their relationship is allegedly back to normal, but only time will tell...
14:53
Nico Rosberg heads into the weekend at the top of the championship standings, having edged back ahead of frustrated team-mate Lewis Hamilton
14:46
A fascinating weekend lies ahead, following a controversial Monaco event
14:45
It's an overcast morning in Montreal, although the sun is doing its best to break through
14:45
Hello and welcome to live coverage of opening practice for the Canadian Grand Prix!