United fizzled out in the second half and Norwich looked more likely to break the deadlock as David De Gea kept out a Teemu Pukki shot from the edge of the area before Ronaldo struck, sending Krul the wrong way.
Daley Blind's injury-time equaliser rescued a 1-1 draw for Manchester United against West Ham United on Sunday but a point was not enough to regain third spot in the Premier League.
Images from the English Premier League matches played on Saturday.
Manchester United forward Anthony Martial may be rested for Tuesday's Premier League trip to West Ham United to avoid aggravating a hamstring injury, manager Louis van Gaal has said.
West Ham United's Michail Antonio has come to the defence of teammate Kurt Zouma, who has been targeted by fans for abusing his cats.
West Ham United made absolutely certain of Premier League safety with a 2-0 win over 10-man Tottenham Hotspur on Saturday -- their third victory over their London rivals this season.
West Ham United players are motivated by their position in the Premier League table and they are keen to stay close to the top for as long as possible, manager Slaven Bilic said on Thursday.
Ben Johnson and Tomas Soucek scored second-half goals as West Ham United twice came back from a goal down to earn a 2-2 draw at home to Brighton and Hove Albion in the Premier League on Sunday.
Manchester City's hopes of remaining in the Premier League title race will hinge on how the defending champions negotiate the next five days with matches against Everton and Chelsea, midfielder Bernardo Silva has said.
The paper added that at least four managers as well as players from several teams could be affected.
Romelu Lukaku's 50th league goal for Everton put them on the way to a deserved 2-0 victory over West Ham United on Sunday, ending a run of four league games without a win. It kept the Merseysiders sixth in the Premier League and West Ham in the bottom five.
'I hope we will all look back and think: 'Maybe we were indulging too much'
IMAGES from the English Premier League matches played on Sunday.
Rui Patricio saved three penalties as Wolverhampton Wanderers defeated English Premier League champions Manchester City to claim the Premier League Asia Trophy 3-2 in a penalty shootout.
Romanians Astra handed West Ham United their first competitive defeat at the London Stadium as Slaven Bilic's team were beaten in the Europa League playoffs on Thursday.
Striker Glenn Murray scored a brace and Jose Izquierdo curled in a shot from outside the box to lift promoted Brighton to 10th in the standings, leaving West Ham in 17th just above the relegation zone.
Samir Nasri has left Manchester City for Sevilla on a season-long loan, the Premier League club announced on Wednesday. Like goalkeeper Joe Hart, who joined Torino on loan earlier, the former French international midfielder does not feature in new manager Pep Guardiola's plans.
In a thriller at Anfield, a weakened Liverpool side came back from the brink to beat Leicester City on penalties after a 3-3 draw, setting up a semi-final against Arsenal.
Tuchel said he hoped left back Ben Chilwell will not require surgery and that the club will wait to see how the situation develops before deciding if they need cover for the position.
Champions Leicester City will begin their Premier League title defence with a trip to newly promoted Hull City on August 13, according to the 2016-17 fixtures released on Wednesday.
Images from Saturday's Premier League action.
Manchester United will travel to third-tier MK Dons in the Capital One Cup second round following the draw on Wednesday, the first time they have been involved at this stage of the competition for 19 years.
IMAGES from the English Premier League matches played on Wednesday.
Arsenal's new manager Unai Emery faces a baptism of fire after the Gunners were handed an opening day fixture at home to Premier League champions Manchester City.
Five facts about Chelsea midfielder Frank Lampard, who announced on Monday he was leaving the club after 13 years.
Chelsea striker Tammy Abraham scored a late opportunist double to secure a 3-0 home win for Chelsea over West Ham United in the English Premier League on Monday.
West Ham United have bolstered their defensive options with the signing of England fullback Carl Jenkinson from Arsenal on a season-long loan, the Premier League club said on Thursday.
Manchester City's long winning run in the Premier League finally came to an end
Premier League champions in 2012 and 2014, Manchester City went to the top of the table with a 3-1 victory over West Ham United on Sunday. They moved on goal difference above Chelsea and neighbours Manchester United, who have also won their three opening games.
Manchester City completed a resounding demolition of West Ham United by winning the second leg of their League Cup semi-final 3-0 on Tuesday to book their place in the final at Wembley 9-0 on aggregate.
Manchester City now need, at most, 11 points from their remaining seven matches to secure their third Premier League title in four seasons.
Manchester United ended a momentous evening hinting at a brighter future after reaching the semi-finals with a 2-1 victory.
"The best team won, we struggled from the beginning and we couldn't deal with their long balls. Usually, you press the ball to win it, but this was different. They defended so deep and so well," City coach Pep Guardiola told the BBC.
Chelsea slipped up in their push for a Champions League spot when they lost 1-0 at home to Arsenal in the Premier League on Wednesday with Emile Smith Rowe's first-half goal settling the London derby after a defensive mix-up by the hosts.
Former Manchester United left back Patrice Evra announced his retirement from soccer on Monday, bringing a trophy-laden 20-year career to an end.
United are four points behind fourth-placed Arsenal, with a game in hand, as they search for a way into the top four and a place in next season's Champions League.
A weakened Manchester United were beaten 2-1 at home by Leicester City on Tuesday, ending Manchester City's wait to be crowned Premier League champions.
Manchester City beat West Ham United 2-0 at the Etihad Stadium on Sunday to win the English Premier League title for the second time in three seasons.
Adrian fired past opposite number and Spanish compatriot Joel Robles immediately after the Everton keeper had crashed his spot kick against the crossbar as West Ham won 9-8 on penalties.
Images from the EPL matches played on Boxing Day.