Spain came back from a goal in the first minute to beat Finland in the opening game of the Euros.
After only 50 seconds, Linda Sallstrom's shot went in off the inside of the post as Spain was stunned by the score.
11 minutes later, it could have been 2-0 but the shot was not taken.
They dominated possession and, moments after having a goal ruled out, captain Irene Paredes headed in following a corner taken by the excellentMariona Caldentey.
Spain took the lead with another headed goal, this time with Aitana Bonmati getting on the end of Maria Pilar Leon's delivery.
LuciaGarcia settled Spain's nerves in the 75th minute with a third headed goal, before Caldentey converted an injury time penalty to give her country a win.
Spain are the odds-on favorites to win the competition for the first time after a run of form that saw them go into the tournament without a defeat in 23 matches.
Their preparation was hampered by two injuries.
The reigning Ballon d'Or holder, Alexia Putellas, suffered a serious knee injury in training on Tuesday and was ruled out for the rest of the season.
Putellas posed for a picture with her team-mates before the match started, while she was on crutches.
She ran over to celebrate with Putellas after Bonmati put Spain ahead.
Manchester United's Ona Batlle was denied by Korpela, who then saved from Laia Aleixandri, as Spain went top of Group B with the Danes and Germans playing later in the day.
The misses did not cost the game, with Caldentey adding a penalty with the final kick of the match.
They didn't see much of the ball after the miss and had to defend deep and in numbers.
The goal was ruled out as the ball had gone out before Esther Gonzalez crossed it, even though the goalkeeper thought she had conceded.
However, it was just a brief respite as two goals in 15 minutes saw Spain take control of the game.
Eveliina Summanen had a rare chance in the second half, but couldn't get a shot off before the game was out of their reach.
The last time the tournament was held in England, the Finns made it to the semi-finals but will need to win their next two games to stay in the competition.