Chelsea and Tottenham dispelled doubts about their readiness to make winning starts to the Premier League on Saturday.
A week after being swatted aside by Manchester City in the Community Shield, Chelsea beat Huddersfield 3-0 in Maurizio Sarri's first league match in charge.
France World Cup winner N'Golo Kante volleyed in the opener in the 34th minute, Jorginho netted a penalty on his Premier League debut before halftime and Pedro Rodriguez drove home the third with an angled drive after the break.
There was barely a save to make for Kepa Arrizabalaga, who became the world's most expensive goalkeeper when he joined Chelsea for 80 million euros ($93 million) from Athletic Bilbao earlier in the week.
Chelsea was the league's biggest spenders in the summer transfer window. Tottenham was the only top-flight side to fail to make a signing but still opened with a 2-1 victory at Newcastle.