Marcelo second puts Real in control of tie
Ronaldo heads in from Carvajal cross
Ronaldo's first goal in four matches
Schalke managed by ex-Chelsea boss Di Matteo
John Charles: Great header, unmarked. He's nearly as good as he thinks he is.
Max Seitler: And Ronaldo's goal drought is over!
Karen Lynch: Real's worries didn't last long, did they?
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Another chance for Real as Karim Benzema is played onside by Atsuto Uchida, he shoots low and the ball squirms through the legs of Timon Wellenreuther, but the pace is taken out of the effort and the Schalke keeper is able to claim the loose ball.
Bradford's fine run is continuing with James Hanson putting the Bantams in front after 21 minutes, firing into the roof of the net to claim his 10th goal of the season.
A win for Bradford would put them within one point of the League One play-off places.
Image source, ReutersHull winger Ahmed Elmohamady:, external Yes, CR7!
Crystal Palace striker Dwight Gayle:, external He's back! Ronaldo!
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Basel still lead by that Derlis Gonzalez goal but the goalscorer has since gone off with a possible head injury. Davide Calla has replaced him.
Image source, Getty ImagesBad form? What bad form. One chance, one goal for Cristiano Ronaldo. Dani Carvajal curls a ball behind the Schalke defence and Ronaldo peels away to head in the opener.
The (three-game) drought is over...
Schalke go a little closer as Klaas-Jan Huntelaar has go from distance, the former Real Madrid man shoots low and hard and forces Iker Casillas into a diving save.
Arsenal and Germany winger Mesut Ozil tweets:, external Watching my two former clubs, Schalke and Real!
Image source, MesutOzil1088Wherever he's watching the game, Mesut seems to keep his widescreen TV in a padded room...
The contrast of luminous yellow boots and bright pink kit is about the only impression Cristiano Ronaldo has made so far in this game. Very quiet start from the Portuguese forward but, in fairness he has not had the service.
First real chance of the game and it goes the way of Schalke as Dennis Aogo is left unmarked on the edge of the area and is picked out by Marco Hoger, he attempts a first-time shot but sends it high and wide.
A quarter-of-an hour gone and Schalke are doing well. They've soaked up a bit pressure and got forward on occasion too. By this stage in the same fixture last year, they were a goal down. So far, so good for the German side.
Daniel Woodley: Shout out to our refs tonight. Martin Atkinson and Mark Clattenburg in charge of both games. Hope for good performances...
Femi John Atoyebi: Re Kroos' booking, Mr Martin Atkinson! Here we go with English referees. Overreaction.
Eyobel Gomini: Atkinson showing once again how bad he is. He should have given both yellows, or nothing at all.
A dozen English officials in action tonight. The first really contentious decision in either game.
Schalke have spent much of the opening stages defending, but they have an opportunity to have a crack at goal when Lucas Silva fouls Marco Hoger, 25 yards from goal. Dennis Aogo takes the free-kick, but slams it into the wall.
Image source, ReutersFirst booking of the game as Toni Kroos, back on German soil for the first time since joining Real from Bayern, is shown a yellow for a rough challenge on Benedikt Howedes.
Image source, Getty ImagesAdvantage Basel and it is a goal out of nowhere. Fabian Frei creates it, feeding the ball into the path of Derlis Gonzalez, who flicks out a foot to squeeze a shot beyond Fabiano in the Porto goal.
Image source, Getty ImagesAttilio Lombardo spied on the Schalke touchline. The former Crystal Palace player-manager is now assistant to Roberto Di Matteo in Germany.
He'll be pleased with what he has seen from his side so far. Real have all the possession in the early stages, but are yet to really test the Schalke defence.
Andy Geoghegan: Unbelievable atmosphere at Schalke. Could hardly hear the Champions League music. Come on Ronaldo! He's simply class.
James Butler: Schalke with plenty to prove - the atmosphere will be huge.
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It is a cagey start in Switzerland - a similar theme in all these Champions League last-16 first leg games so far. Teams seemingly decide it is not worth the risk being too adventurous.
Bradford City FA Cup hero Jon Stead gets a rest as the Bantams get back to League One business at Leyton Orient.
Stead, who has scored in every round of the Cup, isn't risked because of a cut foot he sustained in last Sunday's 2-0 fifth-round win over Sunderland.
Schalke's priority is clear - keeping this tie alive going into the second leg. They have five back in defence and Real Madrid soon see that long balls are going to be pretty futile as Marcelo pumps a ball forward for Gareth Bale, but Matija Nastasic is on it in a flash to clear.