Speaking ahead of the trip to St James' Park, Pochettino maintained he was not overly concerned at the inaction.
Despite Tottenham's hard-fought victory, there was another August blank for Harry Kane, who started even though the England striker had only returned to training on Monday following his notable World Cup exploits.
Harry Kane, Eric and Dele Alli are starting despite returning from their post-World Cup break and France World Cup winning captain Hugo Lloris has also taken his position between the sticks. Tottenham regained the lead in the 18th minute from another header, this one by Dele Alli, found at the back post by Serge Aurier's cross.
Yet, while Mike Ashley was nearly as reluctant to invest as counterpart Joe Lewis - and the owner faced huge protests before kick-off outside Sports Direct - Newcastle did make one astute signing in the form of Kenedy.
However, the advantage was short-lived as the hosts equalized two minutes later, when Joselu headed in Matt Ritchie's superb cross after being left unmarked six yards from goal.
Tottenham boss Mauricio Pochettino has defended Harry Kane by saying his star striker can not score a hat-trick every week after a sluggish display against Newcastle on Saturday.
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They have cited as evidence Musk's tweet that came on August 7 and the very next day, Tesla shares went up by around 13%. Such investors have always been an irritant for Musk, who has sometimes used Twitter to criticize them.
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With momentum on their side and a full-house roaring them on, Benitez's side looked set to build from a position of strength.
But thanks to more questionable defending, their parity lasted just seven minutes. Their best fell to new loan signing Salomon Rondon but his shot deflected onto the crossbar when he was played through.
Their glee did not last long, however, with Alli arriving at the back post to head in Serge Aurier's deep cross for what proved to be the victor.
Newcastle's Slovakian keeper provided an even better stop to keep out a well-struck effort from Moussa Sissoko.
Rose, who was linked with a move away from White Hart Lane this summer, and Trippier are thought to have been allowed more time to fully recover and prepare for the new season.