Mbappe is back ahead of Messi in the standings after Haaland and Kane thrust themselves into the conversation

The World Cup's Golden Boot race had looked like a battle between Lionel Messi and Kylian Mbappe, but Erling Haaland has joined the party.

As the tournament enters the quarter-finals, the race for the Golden Boot is heating up. Here's a look at the four players leading the chase for the top scorer award.