Real Madrid:

2009–10 season-          

On 26 June 2009, Real Madrid confirmed that Ronaldo would join the club on 1 July 2009 from Manchester United for £80 million, after agreeing terms and signing a six-year contract. Ronaldo's contract is worth €11 million per year and it has a €1 billion buy-out clause. He was presented to the world media as a Real Madrid player on 6 July, where he was handed the number 9 jersey. The shirt was presented to him by Madrid legend Alfredo Di Stéfano. Ronaldo was welcomed by 80,000 fans at his presentation at the Santiago Bernabéu Stadium, surpassing Diego Maradona's record of 75,000 fans when he was presented in Italy, after he was transferred from Barcelona to Napoli in 1984.

Ronaldo made his Madrid debut on 21 July in a 1–0 win over Shamrock Rovers. His first goal came one week later with a penalty in Madrid's 4–2 LDU Quito. On 29 August, Ronaldo capped hisLa Liga debut with a goal, scoring Real's second from the penalty spot in a 3–2 home win againstDeportivo La Coruña. On 15 September, Ronaldo scored two free-kicks in a 5-2 away victory over Zürich, his first Champions League goals for Real. He broke a Madrid club record when he scored in a league match against Villarreal and thus became the first ever player to score in his first four La Liga appearances.

An ankle injury suffered on 10 October, while Ronaldo was on international duty with Portugal against Hungary, kept him out until 25 November, which in turn caused him to miss both of Madrid's Champions League group stage matches against Milan. Ronaldo made his first post-injury start in a 1–0 El Clásico defeat to Barcelona on 29 November. On 6 December, he was sent off for the first time in his Madrid career in Madrid's 4–2 victory against Almería, a match which also saw him miss a penalty. He was carded first for removing his shirt during a goal celebration, then for kicking out at an opponent three minutes later. Ronaldo and Gonzalo Higuaín scored 53 league goals during the course of the season and became Real's highest scoring league duo in their history.

 

2010–11 season-

With the departure of Raúl during the summer of 2010, Ronaldo handed the #7 jersey. On 23 October 2010, Ronaldo scored four goals against Racing de Santander, the most goals he has ever scored in a single match. This completed a goalscoring run of six consecutive matches (three in La Liga, one in the Champions League, and two for Portugal) in which Ronaldo scored in each match, totalling 11 goals, which is the most Ronaldo has scored in a single month. Before Real Madrid's 5–0 defeat by Barcelona at the Camp Nou, Ronaldo scored his second La Liga hat-trick of the season in a 5–1 win over Athletic Bilbao. His final match of the calendar year saw him score a hat-trick in a 8–0 trashing of Levante in the Copa del Rey.

Ronaldo began the 2011 with a very promising outlook, esspecially after Real Madrid acknowledged him to have broken numerous goalscoring records, previously settled and held by classic players such as Alfredo Di Stéfano, Hugo Sánchez or Manuel Alday. His year took-off by scoring two vital goals on a tight 3-2 victory over Getafe. He then consolidated his massive performance by scoring a hat-trick and assisting Kaká to score his first league goal after his return from injury, in a 4-2 victory over Villareal on 9 January. One game away from the middle of the season, Ronaldo held very clear perspectives of breaking Telmo Zarra and Hugo Sánchez's record of 38 League goals in a single season, since he was the league's top scorer with 22 goals, above Lionel Messi. Shortly after, Ronaldo experienced the biggest goal drought in his entire career, scoring only 2 goals in more than a month. During this period, Real Madrid acknowledged to have hit the crossbar more than 12 times in the season, most of the shots belonging to Ronaldo and almost all having happened on crucial moments during though draws. Ronaldo then made a massive comeback by scoring a hat-trick on a 7-0 trashing of Málaga on March 3, 2011, but became affected by a muscle injury at the end of the match, which forced him to be 10 days on the sidelines.

On April he made just another massive comeback from injury, sustaining a three-game scoring streak (including 2 goals in Champions League quarter-finals against Tottenham Hotspur), thus arriving to the first of a historical series of four El Clásico encounters, two goals short of breaking his personal record of 42 goals in all competitions in a single season, achieved at United in the 2007-08 season.

During this particular El Clásico edition, Ronaldo scored from the penalty spot and took his tally to 41 goals (42 according to Marca), just as he now had a four-game scoring streak. He scored his first goal on El Clásico on a 1–1 tie at the Santiago Bernabéu Stadium. On 20 April, Ronaldo scored the winning goal against FC Barcelona in the 103rd minute of the Copa del Rey final. 7 May saw Real travel to the Ramón Sánchez Pizjuán to take on Sevilla. Ronaldo led a thrashing of the woeful Andalusian side, scoring four goals in a 6–2 victory. These four goals took him to 46 for the season which bettered his previous record of 42 in a season playing for Manchester United, three days later he reached 49 goals of the season, by scoring another hat-trick in a 4–0 win against Getafe. On May 15, after scoring 2 goals in a 3–1 win over Villarreal, he equalled the La Liga record with most goals in a season with 38 held by Telmo Zarra and Hugo Sánchez. and also became the Pichichi Trophy record holder with most goals in a season, with 39, which include the goal scored on 18 September 2010 away to Real Sociedad, which some sources attribute to Pepe while others attribute it to Ronaldo. On May 21, he scored yet another goal, this time against Almeria, making his Pichichi total to 40, and La Liga total to 39, becoming the first and only player to score 40 goals in a La Liga season.