Sports breaking news today

Here are some of the top sports breaking 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. (Source: ESPN)
• The New England Patriots have traded wide receiver Demaryius Thomas to the New York Jets in exchange for a sixth-round draft pick. (Source: NFL Network)

NBA

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

MLB

• The Houston Astros have signed pitcher Zack Greinke to a six-year contract extension worth up to $147 million. (Source: ESPN)
• The New York Yankees have traded pitcher Sonny Gray to the Cincinnati Reds in exchange for pitcher Justin Sheffield and minor league pitcher Jhonny Perdomo. (Source: MLB.com)

Soccer

• Manchester City has signed midfielder Rodri from Atlético Madrid for a reported fee of £62.8 million. (Source: BBC Sport)
• Liverpool has signed midfielder Thiago Alcântara from Bayern Munich for a reported fee of £25 million. (Source: ESPN)

Tennis

• Novak Djokovic has won his 18th Grand Slam title, defeating Daniil Medvedev in the US Open final. (Source: ESPN)
• Serena Williams has announced her retirement from tennis, citing a desire to focus on her family and other pursuits. (Source: CNN)

Golf

• Rory McIlroy has won the Tour Championship, his first PGA Tour victory in over two years. (Source: ESPN)
• Tiger Woods has announced that he will not play in the upcoming Presidents Cup, citing a need to focus on his recovery from back surgery. (Source: Golf Digest)

Boxing

• Canelo Álvarez has defeated Sergey Kovalev by unanimous decision to win the WBO light heavyweight title. (Source: ESPN)
• Deontay Wilder has announced that he will face Tyson Fury in a rematch on February 22. (Source: ESPN)

These are just a few of the top sports breaking news stories from around the world. Stay tuned for more updates throughout the day!