Nate Flannagan

• Kansas City Chiefs vs Houston Texans live stream (CBS TV): Watch NFL 2015 football online (Game preview)

  The Kansas City Chiefs will play the Houston Texans on Sunday as 13 games take place today in the 2015 NFL Week 1 schedule.

• Green Bay Packers vs Chicago Bears live stream (Fox TV): Watch online NFL 2015 football (Preview)

  The Green Bay Packers will play the Chicago Bears on Sunday as the NFL 2015 football season gets underway with 13 games taking place today.

• Floyd Mayweather vs Andre Berto live stream (Showtime PPV Fight card): Watch boxing 2015 online (Preview)

  Floyd Mayweather vs Andre Berto takes place on Saturday night in what most are predicting will be a heavily one sided contest.

• New England Patriots vs Pittsburgh Steelers live stream (NBC TV schedule): Watch NFL Thursday Night Football 2015 online

  The New England Patriots will play the Pittsburgh Steelers on NFL Thursday Night Football tonight as the NFL 2015-2016 regular season gets underway.

• Serena Williams vs Venus Williams live stream (ESPN): Watch US Open tennis 2015 women's quarterfinals online

  Serena Williams will play Venus Williams in the US Open 2015 tournament on Tuesday as Serena meets perhaps the biggest obstacle to her claiming a first calendar Grand Slam - her own sister!

• Costa Rica vs Uruguay live stream: Watch online international football 2015 (Game preview)

  Costa Rica will play Uruguay on Tuesday night as both teams look to prepare for important qualifiers next month. Tonight's game has a scheduled start time of 10 p.m. ET.

• Mexico vs Argentina live stream (ESPN 2 TV): Watch international soccer 2015 online (Game preview)

  Mexico will play Argentina on Tuesday night in a big game for both teams as they prepare for important competitive games next month.

• USA vs Brazil live stream (ESPN TV): Watch USA soccer online

  USA will play Brazil on Tuesday night in a big international soccer friendly as both teams prepare for their World Cup qualifying campaigns to kick off next month.

• Italian F1 Grand Prix 2015 live stream (NBC Sports): Watch Formula 1 racing online (Race preview)

  The Italian Formula 1 Grand Prix 2015 takes place on Sunday and will see Lewis Hamilton on pole position for the 11th time in the last 12 F1 races.

• UFC 191 live stream, full fight card: Watch Demetrious Johnson vs John Dodson 2 online

  UFC 191 takes place on Saturday night with a huge number of top fights lined up.

• Chile vs Paraguay live stream: Watch online international soccer friendly (Game preview)

  Chile will play Paraguay on Saturday in an international friendly as both teams look to prepare for their World Cup qualifiers which kick off next month.

• 

  Brazil vs Costa Rica live stream: Watch online international football online (Preview)

  Brazil will play Costa Rica on Saturday in an international friendly as the two teams prepare for their World Cup qualifying campaigns to start next month.