We've seen the best and worst of Manchester United in the past week.
He's not featured for United much this season, starting just 14 of their 44 games in all competitions, and they've lost two of the six Premier League games he's started, so it's not as though it's a case of 'Giggs plays, United win'. But he delivered when United needed him.
However, his performance also demonstrated just how difficult a job Moyes has on his hands; on a big night like that, his best player was a 40 year old. Replacing him won't be easy.
Positive
I expect United will be without Giggs and Van Persie for their trip to London this weekend. Van Persie got a knock late on against Olympiakos and Moyes may prefer to save the pair of them for the bigger game against their rivals on Tuesday.
However, that will give him the chance to freshen the team up with Adnan Januzaj and Juan Mata, while Welbeck may play alongside Wayne Rooney up front.
Jamie's backing Man United to beat West Ham 2-1 with Sky Bet
West Ham had a great run in February, off the back of holding Chelsea to a 0-0 draw at Stamford Bridge, but have lost their last two. Anything's possible with United at the moment, though, so this isn't an easy one to predict.
Some of the visitors will have half an eye on Tuesday night and this is always a tough fixture for United as there's a bit of animosity between the two clubs.
However, I reckon United will win 2-1 and build on the positive mood created on Wednesday. But the real test of the club's revival will come at Old Trafford next week.
