Few people in either camp would have foreseen any other outcome, either, with West Ham limping towards the finishing line of what has been a torrid season.
Mauricio Pochettino insists Tottenham will still fight to win the Premier League despite West Ham leaving their title hopes in tatters.
Meanwhile for the Irons, it's the second season in a row they may have contributed to Tottenham falling at the last hurdle, and they couldn't be more delighted.
Spurs' defeat leaves their title hopes hanging by a thread.
The loss means Antonio Conte's men just need to beat Middlesbrough and West Brom to be crowned champions.
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Spurs final three games of the season are at home to Manchester United and away to Leicester and Hull and punters can still use their free bet to back the North London club to defy the odds and claim overall glory. Speaking after the game, Bilic said: "We deserved to win, we did everything ok, we had a game plan and had a good pattern".
"You all know now it is more hard to catch Chelsea but we need to try always until the end".
"I'm very gutted, in the way we played especially", he said. That has disappointed us a lot, but this is football and we need to understand this was a hard game, we tried but it was impossible.
- Of players to appear in 10 or more Premier League London derbies, only Harry Kane, Thierry Henry and Jurgen Klinsmann have a better goal per game ratio than Manuel Lanzini (0.64, nine goals in 14 games). "Today was a key moment, we had to show that when you do not play well but when you must win, you win. We were a little bit unlucky (against West Ham) and we didn't deserve to lose".
Tottenham's Vincent Janssen, top, jumps over West Ham's goalkeeper Adrian during the English Premier League soccer match between West Ham United and Tottenham Hotspur at the London Stadium in London, Friday, May 5, 2017. Tottenham is still set for a second consecutive season in the Champions League for the first time.