West Ham have one point from their first four games, that came from a 1-1 draw with Spurs. They lost 1-9 to Arsenal last month - though they'd been drawing 1-1 until one of their players got a red card in the 34th minute, so there may be some mitigating circumstances there. They lost 3-1 to Everton last week, so they have had some though opponents.
We lost 3-2 to them in the equivalent match last year, the return fixture was cancelled.
The only other time we've played them was in the QF of the WSLCUP, when we won 2-0.