Harry Kane fears that Manchester City and Liverpool could turn the title race into another two-team procession, even though the season is still in August.
City took the title by a point from Liverpool last season, but the pair were 27 and 26 points respectively clear of Chelsea, with Spurs a further point back in fourth place.
After Spurs’ draw at City last weekend there were hopes that Mauricio Pochettino’s men could close the gap, but a shock home defeat to Newcastle has left Spurs fans and Kane “disappointed” and also worried.
Kane said: “As you’re seeing from Manchester City and Liverpool there is no letting up from them.
“I said before the start of the season that if we could put a run together, get that momentum, maybe winning for two-three months on the spin without dropping any points, then that’s what it’s going to take. It’s a disappointing start but there is a long way to go.
“I said as much after the first weekend of the season. Liverpool won on the Friday night and then Manchester City won early on the Saturday.
“They set the standard with those results and I knew we had to keep up with them, make sure we win, especially at home.”
Newcastle shocked Tottenham with a 1-0 win in London – Joelinton hitting the winning goal – with Kane admitting it was a “must-win” game for Pochettino’s side.
Kane added: “It is disappointing that we haven’t done that in only our second home game (losing at home to Newcastle).
“But there is still a long way to go, there are a lot of big games ahead of us. It just means we are going to have to pick up points in the big games, the tough games and try to improve on what we did against Newcastle.
“Obviously winning the first game was great and getting a point at Manchester City is not a bad result. But this is where we needed to step up if we want to be up there come the end of the season.
“These are the games at home that you have to win. We have a week before another big game and we have to address it, see what we can do better to improve and go from there.
“I think we have to learn that teams who come here and get an early goal, are going to defend and make it tough. We need to have the answers to that. Obviously we’d like to go ahead, go 1-0, 2-0 up and finish the game from that point of view.
“That isn’t always going to be the case so when it gets difficult, tight moments in the opponent’s half of the pitch, we have to find more answers. That’s all of us, the stuff we need to work on. That is what we have to try and do.”