Leeds United secured their first home Premier League victory since the opening day, deepening West Ham's woes with a convincing win at Elland Road.
The result lifted Daniel Farke's men to 13th in the table, while West Ham stayed second from bottom after suffering their seventh defeat in nine league matches.
Brenden Aaronson gave Leeds an early lead inside three minutes, and Joe Rodon doubled the advantage just 14 minutes later - the club's quickest two-goal start in a top-flight game since April 2004.