On Sunday, West Ham announced that they would continue to monitor the 34-year-old player in the upcoming days and will provide updates on his condition as necessary.
The Premier League club said: "Everyone wishes Michail a speedy recovery and wishes to express its sincere gratitude to the football family at large for the overwhelming support shown since yesterday's news as well as extending a heartfelt thank you to the emergency services and first responders who attended to Michail in the immediate aftermath of the incident, and the medical team who continue to aid him in his recovery."
West Ham announced on Saturday that Antonio was "stable, conscious and communicating" after the crash in Coppice Row, Epping.
Essex Police confirmed officers had attended the scene of a serious collision involving a Ferrari sports car and asked for witnesses and dashcam footage.
Essex County Fire and Rescue Service released a man trapped in his car, with a statement reading: "Crews were called at 1.02pm this afternoon [Saturday] after reports of a road traffic collision involving one car.
"Firefighters reported that a man was trapped in his car and worked to release him by 1.45pm. The casualty was left in the care of the Ambulance Service."
London-born Antonio, a Jamaica international, is in his 10th season with West Ham after joining from Nottingham Forest in 2015.
He has made 15 appearances in all competitions this season, including 11 starts in the Premier League, and featured in the 3-1 defeat at Leicester in midweek, coming on as a second-half substitute.
Antonio has scored 83 goals in 323 appearances for The Hammers and helped them win the Conference League in 2023.
He began his football career with non-league Tooting and Mitcham before moving into the professional ranks with Reading.
Antonio has also had spells with Cheltenham, Southampton, Colchester and Sheffield Wednesday, while he made his Jamaica debut in 2021 and has since scored five goals in 21 appearances for the nation.
The Jamaica Football Federation confirmed in a statement it was aware of Antonio's situation, with head coach Steve McClaren adding: "On behalf of the entire group of players, support staff and technical staff, I would like to wish Michail a speedy recovery.
"Our thoughts and prayers are with him at this time."