The 30-year old was handed a rare start by Andre Villas-Boas and answered his call by netting two goals in their 3-0 win over Tromso IL at White Hart Lane.
The brace put Defoe within two of Tottenham’s European record of 22 goals, held by Martin Chivers, and the England international was delighted to have contributed to the cause.
"It's great, he's a legend, to be up there with someone like that is great," said Defoe.
"When you get an opportunity you've got to take it - it's as simple as that. The performance was good tonight - we've won the game quite comfortably.
"It's a case of working hard for the team, to win the game. There's a good spirit there and the new lads have been brilliant."