Tottenham boss Mauricio Pochettino admitted he was ‘very unhappy’ that his side didn’t manage to claim all three points after a 1-1 draw with West Ham.
Spurs had hit 20 shots by the time the Hammers took the lead with their first as Obiang beat Hugo Lloris with a blistering effort from 30 yards.
Son replied with his own spectacular long-range strike six minutes from time, but Tottenham were unable to find a winner on another frustrating night for them at the national stadium.
The draw leaves Mauricio Pochettino’s side three points short of Liverpool in fourth, while West Ham climb to 15th, three points clear of the relegation zone.
“We only scored once – and the most difficult chance,” the Spurs boss told Sky Sports.
“I’m very pleased with the effort but very unhappy with the result. We deserved to win but football is like this and we have to accept that.
“We had to score and be effective in front of goal. To play and run like that after two games in 48 hours deserves credit.
“It was an amazing goal from Obiang, their first shot, it’s difficult to accept. Normally we would finish 3-1, 4-1, 5-1 but it wasn’t like this.
“I didn’t see any penalty shouts from my position. I am not going to say anything about the referee, I trust in them.”