Both Tottenham and Chelsea made big changes to their squads over the summer and got off to perfect starts as they recorded wins over Southampton and Everton, respectively, on Saturday.
Tottenham swept aside Saints 4-1 thanks to goals from Ryan Sessegnon, Eric Dier, and Dejan Kulusevski, with manager Antonio Conte saying he saw "a lot of positive things" in his team's performance.
Chelsea, playing its first season under its new owner Todd Boehly, didn't quite blow Frank Lampard's Everton out of the water, but a penalty kick from Jorginho was enough to secure a 1-0 win.
Elsewhere over the weekend, Leeds United beat Wolverhampton Wanderers 2-1; Arsenal beat Crystal Palace 2-0; and Leicester City and Brentford saw out a hard-fought 2-2 draw.