Today's sports news

Here are some of the top sports news stories from around the world:

NFL

• The Kansas City Chiefs have signed quarterback Patrick Mahomes to a 10-year contract extension worth up to $503 million, making him the highest-paid player in NFL history. (ESPN)
• The New England Patriots have traded wide receiver Demaryius Thomas to the New York Jets in exchange for a sixth-round draft pick. (NFL Network)

NBA

• The Los Angeles Lakers have signed forward Anthony Davis to a five-year contract extension worth up to $190 million. (ESPN)
• The Toronto Raptors have traded guard Jeremy Lin to the Atlanta Hawks in exchange for a second-round draft pick. (Sportsnet)

MLB

• The Houston Astros have signed pitcher Zack Greinke to a six-year contract extension worth up to $147 million. (The Athletic)
• The New York Yankees have acquired pitcher James Paxton from the Seattle Mariners in exchange for a pair of minor league pitchers. (MLB.com)

Soccer

• Manchester City has signed midfielder Rodri from Atlético Madrid for a reported £62.8 million. (BBC Sport)
• Liverpool has signed midfielder Thiago Alcântara from Bayern Munich for a reported £25 million. (Sky Sports)

Tennis

• Novak Djokovic has won his 18th Grand Slam title, defeating Daniil Medvedev in the US Open final. (ESPN)
• Serena Williams has announced that she will retire from tennis after the 2022 Australian Open. (The New York Times)

Golf

• Justin Thomas has won the BMW Championship, his 13th PGA Tour victory. (Golf Digest)
• Brooks Koepka has withdrawn from the Tour Championship due to a knee injury. (Golf Channel)

Other Sports

• The Chicago Cubs have signed pitcher Yu Darvish to a six-year contract extension worth up to $126 million. (The Athletic)
• The Golden State Warriors have signed forward Willie Cauley-Stein to a one-year contract. (ESPN)

These are just a few of the top sports news stories from around the world. Let me know if you'd like to hear more!