Watch West Ham stun Chelsea, Christian Pulisic with 89th-minute winner

Chelsea picked a bad day to debut a new kit with a gigantic "3" emblazoned on the chest.

The Blues lost to/drew London rivals West Ham United 3-2 on Wednesday, dropping points with a chance to take sole possession of third place in the Premier League. Chelsea wore their new blue kit -- sponsored by UK telecom company Three -- for the match, but West Ham striker Andriy Yarmolenko's 89th-minute winner provided the lasting image.

WHAT DRAMA.

West Ham take the lead with scant moments to go before stoppage time! #MyPLSummer pic.twitter.com/ernTneO0Qf
— NBC Sports Soccer (@NBCSportsSoccer) July 1, 2020

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Willian scored in the 42nd minute after American star Christian Pulisic drew a penalty for Chelsea. West Ham responded soon after, with Tomas Soucek equalizing -- thus making up for a goal overturned by VAR and an own goal last week against Tottenham Hotspur -- in the first half's fifth minute of stoppage time.

All square at the half between Chelsea and West Ham thanks to this picture perfect corner! #MyPLSummer pic.twitter.com/6OJrPFVLR3
— NBC Sports Soccer (@NBCSportsSoccer) July 1, 2020

Michail Antonio gave West Ham the lead in the 51st minute, but a magic moment from Willian erased the Irons' advantage. Pulisic drew a foul outside of the box, and Willian capitalized with a sublime free kick that evened the score at 2-2 in the 72nd minute.

Off the woodwork and IN.

A magnificent free kick ties it up for Chelsea. #MyPLSummer pic.twitter.com/1sacJiMfuO
— NBC Sports Soccer (@NBCSportsSoccer) July 1, 2020

Yarmolenko and West Ham got the last laugh just before stoppage time, earning a much-needed three points to move three clear of the relegation zone. The win clinched West Ham's first league double against Chelsea since the 2002-03 season, and the Irons were clinical in doing so. West Ham scored on all three shots on target.

Pulisic maintained his hot form, as did Willian. But Chelsea did not. The Blues once again dropped points from a winning position Wednesday, and they're much closer in that area to the clubs battling relegation than the ones chasing UEFA Champions League qualification.

18 - Only West Ham (22) and Aston Villa (19) have dropped more points from leading positions in this season’s Premier League than Chelsea (18). Mayhem. pic.twitter.com/II6Pxw5iFV
— OptaJoe (@OptaJoe) July 1, 2020

Leicester City's loss to Everton and Chelsea's defeat are boons for Manchester United, Wolves and the other teams looking to earn a spot in Europe next season. Chelsea's grip on fourth place is down to two points, while United and Wolves are only three points behind Leicester themselves.