Mauricio Pochettino insists his Tottenham team selections cannot be considered "experiments" as he prepares to take on Newcastle United.
Spurs stole a 2-2 draw at Premier League champions Manchester City last weekend and face rivals Arsenal a week on Sunday, with struggling Newcastle visitors to the Tottenham Hotspur Stadium in between.
It was put to Pochettino that he might look to name a different XI against Newcastle in order to keep players fresh for the derby match, but he took issue with the word "experiment".
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"Experiment? I'm not a scientist.