Sargeant suffered a couple of costly shunts since the summer break, starting with an off in Zandvoort.
The American rookie also had a huge crash on his first lap of qualifying for the Japanese Grand Prix, running out of track to catch oversteer out of the final corner, and then losing control on the grass as he thumped the wall with both ends of his car.
Williams faced a full rebuild around a spare chassis, which forced Sargeant to start from the pitlane with a 10-second time penalty for using a third car.
In the race he also became involved in an incident, colliding with Alfa Romeo's Valtteri Bottas into the hairpin, with the resulting damage forcing both drivers to retire.
Speaking before Sunday's race, Williams' head of vehicle performance Dave Robson felt Sargeant's high-profile crashes have taken the shine off his otherwise improving form, with Sargeant getting close to team-mate Alex Albon's lap times in Suzuka practice.
"I guess inevitably, they catch the headlines, don't they?," Robson replied when asked by Autosport about Sargeant's crashes.
"I think it has kind of masked his steady performance and this weekend was actually going really well.
Source: Autosport