On Tuesday night he played the full 90 minutes as Tottenham won 1-0 in Dortmund, making it 4-0 on aggregate, Moussa Sissoko into the quarter-finals and his longstanding Champions League dream still alive.
This is the first time Tottenham are in the last eight of the Champions League since 2010/11 when they bowed out 5-0 on aggregate to Real Madrid.
That game will have to be rearranged anyway if the Seagulls beat Millwall in the FA Cup quarter-finals, so Spurs' first match at the new stadium could be in the Premier League against Huddersfield on 13 April or in the Champions League quarter-finals.
Indeed, against only Chelsea has he scored more goals, although he has drawn a blank in his last two meetings with the Saints having netted in each of his first four.
Kane scored in the 49th minute against Borussia Dortmund for a club record 24th goal in European competitions.
Winger Marius Wolf was also pained to see his side give away a goal to Spurs after a strong first half.
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Tottenham Hotspur could yet play their Champions League quarter-final at their new stadium despite the fact it's still not finished.
Pochettino's rope-a-dope game plan worked, absorbing the punches, and then dealing the knockout blow through Harry Kane on the counter, leaving Dortmund needing five goals and a miracle. "Now we have to deliver in the next few weeks, it starts on Saturday".
High-profile mistakes from Lloris almost saw Spurs eliminated in the group stages, but when they needed their captain to stand tall to Dortmund's first-half bombardment the French goalkeeper refused to be beaten.
Dortmund did everything they could to breathe life into the second leg in the opening period, but they came up against an inspired Lloris, who made a string of vital saves, most impressively to thwart Mario Gotze and Julian Weigl.
'Of course you need some luck and a good 'keeper but we dug in and we knew if we did that we wouldn't concede which was so important'.
"They deserved it, the effort was brilliant", he said.