Spain are Sky Bet's 1/2 favourites to book their place in the quarter-finals of Euro 2012 with a win when they face Croatia at the Arena Gdansk.
Presuming Italy win their final game, a 1-1 draw would see progress decided on each side's respective results against Republic of Ireland and is an 15/2 chance, while a 2-2 draw, which has been cut to 8/1, sends both sides through.
Vicente del Bosque's men had been Sky Bet's favourites to win Euro 2012 ever since winning the World Cup two years ago, but briefly lost their place at the top of the market to Germany after being held to a 1-1 draw by Italy.
However, their impressive 4-0 thrashing of the Republic of Ireland saw them cut to 9/4 to retain the trophy, while Croatia remain significant outsiders at 28/1.
Fernando Torres bagged a brace against the Irish and is the 5/1 favourite to open the scoring, while Croatia's Mario Mandzukic, who already has three goals to his name at the finals, is 11/1 to net first.
Mandzukic has the joint most goals at the finals after the first two rounds of fixtures but is 16/1 to be the tournament's top scorer, while Torres is the 3/1 favourite despite his disappointing form the Premier League this season.