West Ham United moved a step closer to their first European final since 1976 after coming from behind to beat AZ Alkmaar 2-1 at London Stadium in the first leg of their UEFA Europa Conference League semi-final.
Second-half goals by Said Benrahma and Michail Antonio hand West Ham a slender advantage heading to Holland for next week's second leg after Tijjani Reijnders gave the visitors a 41st-minute lead.
See: West Ham report
David Moyes made two changes from the side that beat Manchester United 1-0 on Sunday, with the fit-again Kurt Zouma replacing Angelo Ogbonna, while European regular Alphonse Areola started in goal in place of Lukasz Fabianski.
Reijnders put the visitors in front with a low effort that Areola was unable to keep out, but the Hammers levelled midway through the second half through Benrahma's penalty, awarded for a foul by former Brighton & Hove Albion and Arsenal goalkeeper Mathew Ryan on Jarrod Bowen.
Antonio then completed the turnaround eight minutes later, prodding in from close range.
If West Ham progress to the final in Prague on 7 June, they will face either Fiorentina or Basel, with the Swiss side holding a 2-1 advantage following the first leg in Florence.
TV Info - Broadcasters
Up next for the Hammers is a trip to Brentford on Sunday.
A win in west London for West Ham would confirm their Premier League status for next season.