Martinez struck inside two minutes before Domenico Berardi equalised, but Lukaku gave Inter breathing space with a powerful strike and a penalty before half time.
That is Murray's 46th ATP title.
Rafael Nadal extended his astonishing winning run on clay to 42 consecutive sets as he reached the semi-finals of the Barcelona Open with a 6-0, 7-5 victory over Slovakia's Martin Klizan.
At the age of 23, Barcelona's Lionel Messi has already come to define an era of European soccer in a way only a handful of players have managed since the days of Alfredo di Stefano.
He was slapped with $24,000 in fines on Friday but was allowed to play two matches in the doubles tournament with partner Simone Bolelli before the Grand Slam Board announced their decision to suspend Fognini on Saturday.
Australia's Alex de Minaur fought back from a set down to beat former world number one Andy Murray
Portugal captain Cristiano Ronaldo and his Real Madrid team-mate Gareth Bale have been shortlisted for this year's coveted Ballon d'Or award.
Juventus regained the Serie A lead after Alessandro Del Piero scored a late free kick on his 700th appearance for the club to seal a 2-1 home win over Lazio on Wednesday.
Jose Mourinho must resolve a tactical dilemma when he attempts to land his first piece of silverware as Real Madrid coach in Wednesday's King's Cup final against Barcelona at Valencia's Mestalla stadium.
Formula One moved to end turmoil over engine regulations on Sunday after a weekend of often heated discussions at the British Grand Prix.
If Rafael Nadal's Australian Open semi-final win over Greek sensation Stefanos Tsitsipas was one-sided, Novak Djokovic showed he could be even more brutal in his victory against Lucas Pouille on Friday.
Images from Day 1 at the Australian Open.
The Indian Grand Prix could be moved to the second weekend in December as Formula One's season-ending race, Ferrari principal Stefano Domenicali said on Friday.
Barcelona finally made a statement of intent in what has been a chaotic season as they came from behind to beat La Liga leaders Real Sociedad 2-1 at home on Wednesday.
Having toppled 20-time Grand Slam champion Roger Federer in the fourth round of the Australian Open on Sunday, an overwhelmed Stefanos Tsitsipas felt thrilled to have turned his idol into a 'rival'.
World number one Novak Djokovic eased past Greek Stefanos Tsitsipas 6-3, 6-4 to lift his fifth Dubai Tennis Championships title on Saturday, extending his unbeaten start to the 2020 season. Djokovic has now won 21 straight matches, including 18 this season, having already lifted the inaugural ATP Cup with Serbia and a record-extending eighth Australian Open title last month.
Roger Federer lit up the O2 Arena with a dazzling 6-4, 6-3 defeat of Novak Djokovic to hand the Serb an early ATP Finals exit and wreck his bid to end the year ranked number one on Thursday.
Real Madrid coach Jose Mourinho has answered his critics in the best possible way by adding an 18th King's Cup to the club's trophy cabinet and ending a two-year silverware drought on his debut season.
Exodus of big guns opens up bottom half of men's draw
Pope Francis on Tuesday called for respect of human rights and healing of racial and religious hatred as he arrived on a two-day visit to Sri Lanka, days after a new government assumed power in the country.
Images from Day 3 of the 2020 US Open in New York, on Wednesday.
Juventus staged a superb revival to battle back from two goals down and rescue their Champions League hopes with a 2-2 draw against Bayern Munich in their last 16 first leg on Tuesday.
Brazilian Felipe Massa is likely to stay with Ferrari next year alongside Fernando Alonso, team principal Stefano Domenicali said on Thursday.
Roger Federer is no longer chasing the top ranking and would rather be a contender at Grand Slams than battling Novak Djokovic and Rafa Nadal to be world number one, the Swiss tennis great said.
Despite it all, the participants, from across the American continent, show up as they vie for the medals and glory. Along the way, they give us some moments that are captured for posterity. Here are some eye-catching scenes from the Pan Am Games...
American teenage sensation Coco Gauff became the youngest player to win a WTA title in 15 years as she beat former French Open champion Jelena Ostapenko in the Linz Open final on Sunday.
World number one Nadal will meet Greek teenager Stefanos Tsitsipas in Sunday's showpiece when he will target a record-extending 11th title in Barcelona a week after claiming the Monte Carlo Masters for the 11th time.
Top seed Rafa Nadal, who has won the tournament 10 times, also reached the last eight after dispatching compatriot Guillermo Garcia-Lopez 6-1, 6-3 and claiming a record-extending 40th consecutive set on clay.
No tennis for four months, no problem for Rafael Nadal.
News of all that transpired on and off the football field.
The 31-year-old German fell 30 points behind race-winner Hamilton after a collision with the Briton left him struggling to finish fourth in Monza last time out, one of several races where Vettel has frittered away a position of authority.
Summary of sports events and persons who made news on Sunday
Juventus striker Carlos Tevez scored a second-half penalty as the hosts beat holders Real Madrid 2-1 in the Champions League semi-final, first leg, on Tuesday.
Roger Federer cruised to a 6-4, 6-4 win over Peter Gojowczyk in his first appearance since losing in the Wimbledon quarter-finals.
Images from the football matches played across Europe on Sunday
Just as against Swiss 20-time Grand Slam champion Federer in Saturday's semi-final, the 21-year-old produced a dashing display of power and guile to stun the in-form Djokovic 6-4, 6-3.
Renault's Fernando Alonso will replace Kimi Raikkonen at Ferrari next season, the Italian team said Wednesday. Spain's Alonso, World champion in 2005 and 2006, has signed a three-year deal and will partner Felipe Massa next year.
Ferrari boss Stefano Domenicali says he is confident the team's former hero Michael Schumacher will be beaten by their new idol Fernando Alonso.
Roger Federer was made to work hard by Fernando Verdasco before beating the Spanish veteran 6-3, 3-6, 6-3 on Wednesday to reach the quarter-finals of the Dubai Duty Free Tennis Championships.
Rafael Nadal is hunting a record-extending and almost unbelievable 12th Roland Garros title is remarkable in itself.