Son went down amid slight contact from Harry Maguire during the first half and was shown a yellow card by referee Michael Oliver.
The South Korean went on to get on the scoresheet at Wembley, putting the finishing touches on a win that had been set up by Davinson Sanchez and Christian Eriksen goals.
Leicester had 20 shots to Spurs' 12 and were guilty of missing several chances through James Maddison and Harvey Barnes, while Vardy's spot-kick was saved by Hugo Lloris just three minutes before Eriksen made it 2-0.
Ouch - though he did bounce back to score and make it 2-1! I think if you want to fight for big things, you need a little bit of luck and it was for our side, but we deserved it.
"Unbelievable, unbelievable, unbelievable. When you compare the situation with the penalty against us, unbelievable". It was the same referee but I don't know how he has measured the situation. It is so hard.
Riot police clash with yellow vest protesters in Paris
The man's hand was almost blown off when he picked up a tear gas grenade and it exploded, according to NPR's Eleanor Beardsley . Today, there have been more clashes between riot police and protestors on the street, with tear gas and grenades deployed.
'I always accept the mistake but I think it was so unusual the situation today. "Come on, we are the most innocent people on the pitch".
In the space of just a few weeks, Tottenham Hotspur have lost two of their most important attacking players to injury, crashed out of both domestic cups and also found their way (just about) back into a title race.
Tottenham will host Borussia Dortmund in the first leg of their Champions League last 16 clash at Wembley next Wednesday night as they look to take a step closer to the quarter-finals.
Dortmund played on Saturday and the Argentinian believes his side are now at a massive disadvantage by having 24 hours less to recover. For a young player, we have to find good consistency. It doesn't mean that we're not going to compete. "I think he's going to feel fantastic now". "They all need to make progress and we will be passionate with these players".
The Dallas Mavericks Have Traded SF Harrison Barnes
Barnes remained on the bench to cheer on the Mavs for the rest of the contest. Information from ESPN's Bobby Marks was used in this report .
"I said to Jamie Vardy he can take the penalty".
"We had all the opportunities to win the game".
"It was the same feeling against (Manchester) United, we wasted a lot of chances".
The Lilywhites now find themselves five points behind second-placed Liverpool FC as they look to try and keep themselves in the title race.
Roger Stone Insists He Is No Kardashian In Counterattack Against Gag Order
In the filing Friday, Stone's attorneys write that his comments don't merit a "clear and present danger to a fair trial". Jackson was assigned Stone's case because of its relation to the hacking case in which she also presides.