Rafael Nadal will miss the U.S. Open after announcing on Friday that he is ending his season because of an injury to his left foot that has troubled him since his defeat in the semi-finals at the French Open in June.

Paris Saint-Germain fans will have to wait a little longer before seeing Lionel Messi make his debut after coach Mauricio Pochettino left both the former Barcelona man and Neymar out of his squad for Friday's Ligue 1 game away at Brest.

Both Messi and Neymar started pre-season training late after an extended break following the Copa America -- Messi's Argentina beat Neymar's Brazil 1-0 in the final in Rio de Janeiro on July 11.

Arsenal completed the signing of midfielder Martin Odegaard from Real Madrid on Friday.

The 22-year-old Norway international was on loan in the second half of last season and returns on a long-term contract after Arsenal paid a fee reported to be 35 million euros ($41 million).

Harvey Sutton, or "Little Man," as he is known on the Appalachian Trail, won't have long to bask in the glory of hiking its full length. After all, he starts kindergarten Friday.

At 5 years old, Harvey is one of the youngest — and the latest of several youngsters in recent years — to complete the trail, after tagging along with his parents over more than 2,100 miles in 209 days.

Robert Lewandowski netted twice as Bayern Munich retained the German Super Cup with a 3-1 win at Borussia Dortmund on Tuesday in a high-tempo encounter.

Lewandowski put Bayern ahead with a bullet header at Signal Iduna Park before Thomas Mueller doubled the visitors' lead to make it 2-0 just after the break.

The champion Milwaukee Bucks and the Brooklyn Nets will be the showcase teams when the NBA opens the 2021-22 regular season on October 19, the league announced Tuesday.

Following a shortened offseason due to the coronavirus pandemic, the Bucks will host the Nets in one of two opening night games.

Andy Murray returned to the ATP Tour on Monday after last competing at Wimbledon, reaching the second round of the Cincinnati Masters with a  6-4, 6-4 win over Frenchman Richard Gasquet.

Tammy Abraham has completed his move to Roma from Chelsea, the Serie A club announced on Monday, the England forward joined former Blues boss Jose Mourinho in the Italian capital in a deal worth 40 million euros ($47 million).

Barcelona started life without Lionel Messi by defeating Real Sociedad 4-2 in their La Liga opener at the Camp Nou on Sunday even if fans admitted it felt like "a leap into the unknown".

Captain Gerard Pique gave them a 19th minute lead with his 50th goal for the club.

Roger Federer said Friday the timing of his return to the courts was still uncertain, just weeks ahead of the US Open, but the tennis legend remained upbeat after turning 40.