Lewis Holtby says Tottenham remain hopeful of claiming a top four spot this season despite their recent mini-slump.
Spurs have claimed just four points from their last four league outings - although they are unbeaten in their last two - and dropped points in their 2-2 draw with fellow top-four rivals Everton on Sunday.
Injuries to Gareth Bale, Jermain Defoe and Aaron Lennon have made matters worst for Spurs, who are now two points ahead of rivals Arsenal who have a game in hand in 5th.
Andre Villas-Boas' men have a tough run-in as they chase Champions League qualification, with games against Manchester City and Chelsea to come.
However Holtby, who made the move to White Hart Lane from Schalke in January, says he is optimistic Spurs are up for the battle with six games to go.
"At the end of the day, if we want to play in the Champions League we want to win games like these," said Holtby.
"But we've still got decisive games against City at home and against Chelsea away, which are going to be big games.
"The games against Southampton and Sunderland are also ones we have to win to get those points to stay up there in the top four.
"I'm confident that we can do it because we have a lot of quality in our side."
Spurs' attention will be away from the Premier League this week with a place in the Europa League semi-final up for grabs. Swiss outfit Basel stand in their way, and are favourites to progress after securing a 2-2 draw at White Hart Lane last week.