Tottenham 1 Sheffield United 1
Tottenham boss Mauricio Pochettino felt Tanguy Ndombele's injury contributed to another flat league performance.
Ndombele, who had been coming into form for Spurs, came off at half-time after an apparent groin injury.
He suffered it in the first half, but wanted to play on until the physio told Pochettino otherwise at half-time.
Spurs were again not at their best as Son Heung-min's goal was cancelled out by George Baldock's late effort.
"We need to assess him," Pochettino said. "I don't know anything at this moment.
"He felt pain in his groin but I don't know if that was before or during the game it happened.
"That type of situation sometimes affects the team."
While Spurs are having a miserable time in the league, Sheffield United could not be having more fun on their return to the Premier League and they occupy the top six.
They remain unbeaten away from home, but Chris Wilder, who saw his side have a goal marginally ruled out for offside by VAR, was left wanting more.
He said: "We came here with 16 points from 11 games. We are a little bit disappointed we didn't move from 16 to 19."