Jose Mourinho is back in the Premier League after 11 months out of management, but will he get off to a winning start with Tottenham against London rivals West Ham?
BBC football expert Mark Lawrenson said: "West Ham are really toiling at the moment, with only two points from their past six league games, just when I thought they would kick on after beating Manchester United to go fifth.
"I thought the Hammers had banished this sort of form but they are on a terrible run.
"I am going to back them to get a draw on Saturday, though, on the basis that the Mourinho factor has turned it into an occasion that will raise West Ham's game."
Lawro is making predictions for all 380 top-flight matches this season, against a variety of guests.