An overpowered Tottenham side taught Brighton a hard lesson on what Premier League life would have been like for them had they gained play-off success last season.
Although the first half produced no goals, we were provided with plenty of entertainment. The first eye catching moment of the delayed game was Jan Vertonghen's thunderous low effort which was well dealt with by the Seagull's second keeper Christian Walton.
But Brigton were not at all shy to venture forward despite being on away soil to one of the bigger clubs remaining in the tournament. And the travelling side could, and should have been awarded a penalty for a handball on Kyle Naughton.
As if the spotlight was not to be shone over the head of Mark Clattenburg enough due to his weekend ban of Premier League officiating due to attending an Ed Sheeran gig, he was the centre of all Brighton abuse when this was the first controversial penalty decision waved away of the night.
Never the less, Spurs continued to express their superiority and could have opened the scoreline through Aaron Lennon but his shot looped agonisingly high and wide narrowly.
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Pottechino's men struggled to find a way through in the first half so the boss decided to bring on Erik Lamela in the place of a tired Aaron Lennon. The substitution took just nine minutes to pay off when the Argentine got onto the end of a Roberto Soldado lay off to poke the ball past the despairing dive of Christian Walton.
However, the goal was not as artful as his remarkable rabona strike last week in Spurs' Europa League tie with Asteras Tripolis.
Inigo Calderon was then the next victim of a penalty decision being rejected for the Seagulls. This, the strongest appeal of the evening was turned away most confidently by Mark Clattenburg right in front of the furious travelling supporters.
It was at this point when Sami Hyypia's side began to turn the dial of Spurs, however they still could not register an attempt on target.
Kane scores again
Spurs capitalised on Brighton's lack of dominance up front to push themselves closer to victory when a defensive error fed the ball to Harry Kane who had an open goal to score into.
Kazenga LuaLua then drew yet another foul in the area but once more, Clattenburg waved away the strong appeals. The Seagulls could have had already as many penalties as Spurs conceded against Manchester City a couple of weeks ago but the referee failed to point to the spot at any point in the game.
Mauricio Pottechino said after the game: "We're happy to progress in this competition. Tonight was not easy and I think we were quite lucky with some decisions". Spurs will next face a trip to the Midlands to face a weak Aston Villa side who have failed to score in 300 minutes.