Kohli played in every match of India's successful World Cup campaign. In the next four group matches he had low scores of 8, 34, 12 and 1 against England, Ireland, Netherlands and South Africa respectively. Having returned to form with 59 against the West Indies, he scored only 24 and 9 in the quarter-final against Australia and semi-final against Pakistan respectively. In the final against Sri Lanka at Mumbai, he scored 35, sharing an 83-run partnership with Gambhir for the third wicket after India had lost both openers within the seventh over chasing 275. This partnership is regarded as "one of the turning points in the match", as India went on to win the match by six wickets and lift the World Cup for the first time since 1983.
On April 3, at WrestleMania XXVII, The Rock opened the show by cutting a promo. After appearing in numerous backstage segments, The Rock came to ringside to restart the main event between Cena and The Miz as a No Disqualification match, after it had ended in a draw. As revenge for the Attitude Adjustment Cena had given him on Raw, Rock hit Cena with the Rock Bottom, allowing The Miz to pin him and retain the WWE Championship.
Privately, he wanted to start, but kept it to himself. O'Neal missed games throughout the season due to an assortment of ailments to his right leg including knee, calf, hip, and Achilles injuries. The Celtics traded away center Kendrick Perkins in February partially due to the expectation that O'Neal would return to fill Perkins' role. The Celtics were 33–10 in games Perkins had missed during the year due to injury, and they were 19–3 in games that O'Neal played over 20 minutes. After requesting a cortisone shot, O'Neal returned April 3 after missing 27 games due to his Achilles; he played only five minutes due to a strained right calf. It was the last regular season game he would play that year.
The following night on Raw, The Rock and Cena agreed to a match at WrestleMania XXVIII the next year. They then worked together to fend off an attack by The Corre, which at the time consisted of Wade Barrett, Heath Slater, Justin Gabriel, and Ezekiel Jackson.
By 5 April 2011, Nokia ceased to openly source any portion of the Symbian software and reduced its collaboration to a small group of pre-selected partners in Japan. Source code released under the EPL remains available in third-party repositories.
On April 13, 2011, the NBA fined Bryant $100,000 for directing a gay slur at referee Bennie Adams in frustration in the previous day's game. The Gay & Lesbian Alliance Against Defamation praised the NBA's decision to fine Bryant, and the Human Rights Campaign said that Bryant's language was a "disgrace" and "distasteful". Bryant stated that he was open to discussing the matter with gay rights groups and wanted to appeal his fine. He later apologized for the use of the word. Bryant and other Lakers appeared in a Lakers public service announcement denouncing his behavior.
On 19 April 2011, Castro resigned from the Communist Party central committee, thus stepping down as party leader. Raúl was selected as his successor. Now without any official role in the country's government, he took on the role of an elder statesman.
Following a security intrusion, the PlayStation Network had a temporary suspension of operation which began on April 20, 2011 and affected 77 million registered accounts. Lasting 23 days, this outage was the longest amount of time the PSN had been offline since its inception in 2006.
Messi scored both goals in his side's 2–0 win in the first leg of the Champions League semi-finals in Madrid, the second of which – a slaloming dribble past three Real players – was acclaimed as one of the best ever in the competition. Although he did not score, he was again important in the second-leg draw that sent Barcelona through to the Champions League final.
On 29 April 2011, Middleton and Prince William got married in Westminster Abbey, with the day declared a bank holiday in the United Kingdom. Estimates of the global audience for the wedding ranged around 300 million or more, whilst 26 million watched the event live in Britain. On marriage, Catherine assumed the style "Her Royal Highness The Duchess of Cambridge".