By Frank Dalleres Arsenal regained top spot in the Premier League in emphatic fashion and Marcus Rashford boosted his World Cup prospects as Manchester United beat West Ham on Sunday. It came at the end of an action-packed weekend which also saw Tottenham Hotspur snatch victory from the jaws of defeat, Brighton burst Chelsea’s bubble and Liverpool slip up again. Here are five talking points. Arsenal back on topArsenal passed the latest test of their title-challenging credentials by responding to successive setbacks with a thumping 5-0 win over Nottingham Forest. Mikel Arteta’s side dropped poi…