Jan Vennegoor of Hesselink proved Celtic's super-sub for the second time this week as the Scottish champions' tour of Portugal ended on a high with a 1-0 win over Porto.

The Dutch striker, who came off the bench to head in a stoppage-time equaliser against Middlesbrough on Tuesday night, scored in almost identical fashion to seal tonight's 1-0 friendly win over Porto.

The game looked set to finish in a goalless draw until superb build-up from the Hoops culminated in Paul Hartley's cross being powered home by Vennegoor of Hesselink with just two minutes remaining.

Porto had the better of the early stages, Cristian Sapunaru's header skimming the crossbar and Lisandro Lopez thwarted by a brilliant Artur Boruc save when clean through.

Celtic captain Stephen McManus went closest for the visitors in the first half with a header which went narrowly wide.

After the break, Boruc produced more heroics to halt Cristian Rodriguez one on one, while Hoops substitute Bobo Balde headed over the Porto bar.

That looked to be the end of the action until Vennegoor of Hesselink's late intervention.