Aston Martin's Alonso Leads Opening Session at Singapore
Marina Bay Street Circuit
3-5 October will see the race starting at 13:00 BST on race day.
Live commentary provided on BBC Radio 5 Sports Extra and mobile app.
FP1 Results Overview
The team's Fernando Alonso set the pace in front of Monegasque driver and reigning champion in FP1 at the street circuit event.
The British team's drivers Australian rookie and British talent wrapped up the run in mid-table positions.
The young Australian was over two tenths faster than Norris.
Alonso was 0.150secs in front of the Ferrari driver and a clear gap quicker than Verstappen.
Ferrari's seven-time champion was fourth fastest.
Car Performance
Few anticipate that Aston Martin will be contenders for the top spot.
That said, the squad are optimistic of a strong showing on a tight circuit that is better matched to their chassis, which runs more competitively when plenty of downforce are required.
Two-time champion Alonso is also famous as a Marina Bay expert, and typically performs well on the Marina Bay street track.
But he was probably using less fuel or a increased power than his competitors, or each, to set such a quick time.
Team Updates
His team-mate Lance Stroll was a significant margin behind in 18th place.
Stroll had issues with his driving position early in the session and was also running new components.
Opening practice in Marina Bay is not reflective of later performance under lights as it is conducted in afternoon sun in the daytime, while grid-deciding session and the main event are held after dark.
Title Battle
The McLaren driver has an advantage over Norris by a quarter-century with remaining rounds left entering the Grand Prix in Singapore.
McLaren are poised to clinch the constructors' championship on Sunday.
Sole scenario they can miss out in Singapore is if Mercedes beat them by over thirty or the Scuderia do so by 35.
Competitor Outlook
Red Bull are optimistic of a positive weekend after recent successes in Italy and Azerbaijan leading into this weekend.
The team breathed a sigh when precipitation falling ahead of FP1 stopped by the moment the cars emerged on a track that had remained dry.
Senior figure Red Bull's advisor said prior to running that they needed a clear session to get underway on understanding their car configuration for the weekend.