Leigh Diffey is the play-by-play commentator and host for motorsports at NBC Sports. One of the most prolific voices in motorsports, he covers IndyCar, IMSA WeatherTech Sportscar Championship, MotoGP, and Monster Energy Supercross alongside Ricky Carmichael. In addition, he is NBC Olympics’ primary announcer for Track & Field and has called numerous events at both the Summer and Winter Games. In 2019, Diffey was the lead announcer on NBC’s very first broadcast of the Indianapolis 500, and he reprised the role in 2020. Versatility is ones of Diffey’s strengths, and in his time at NBC Sports since joining in 2013, he has worked on the Track & Field World and National Championships, rowing at the Rio Summer Games, bobsled, skeleton, and luge at both the Sochi and Pyeongchang Winter Games, the Rugby World Cup, and Premiership Rugby.

Veteran NBC Sports commentator Todd Harris will handle play-by-play duties at select races for Monster Energy Supercross in 2023, and his history runs deep. He’s also the voice of NBC Sports’ action-sports lineup, including the Dew Action Sports Tour, Olympic snowboarding, alpine skiing, and much more. Harris began his sports broadcasting career in 1991 and has had the throttle wide open ever since. He’s announced everything from Arenacross to the NBA Playoffs, X Games to IndyCar, and everything in between.

Ricky Carmichael needs no introduction to the world of SuperMotocross. The GOAT had a highly successful amateur career and went on to win a record 10 Pro Motocross championships and 5 AMA Supercross titles, including two perfect seasons in Pro Motocross. Carmichael was inducted into the AMA Motorcycle Hall of Fame in 2013 and the Motorsports Hall of Fame of America in 2015. Carmichael enters his sixth season on the broadcast team for Monster Energy Supercross. When he joined in 2018, he started as an on-track reporter, and quickly moved into the booth the following season. He has also called races for AMA Pro Motocross and the NASCAR Xfi nity Series during his time with NBC.

 

Carmichael has stayed heavily involved in the sport he loves, owning a championship-winning team, designing tracks for the Daytona Supercross, running Ricky Carmichael University, and working with Triumph in developing their SuperMotocross team.

Will Christien enters her sixth season as an on-track reporter for the SuperMotocross World Championship broadcast team. She fi rst joined the AMA Pro Motocross team in 2018, and the Monster Energy Supercross team the following year. Prior to her work with the two series, Christien served as a reporter with NBC for the Red Bull Global Rallycross and Red Bull Straight Rhythm.

 

Throughout Will’s broadcast career, she has hosted shows on NBC, Fox Sports, Red Bull TV, WeTV, Discovery Channel, Versus, Fuel TV, WFTV, Sun Sports, and Back9Network, in addition to hosting travel and sports shows for clients including Red Bull Media House, Visit Orlando, Bonnier Corporation, and more.

 

Will also brings a knowledge of action sports after several years as a professional wakeboarder and instructor.

A versatile broadcaster for Monster Energy Supercross, Daniel Blair serves as a play-by-play announcer, pit reporter, analyst, and host for racing coverage on NBC Sports, CNBC, and Peacock. Daniel began his broadcasting career in 2015 as an analyst for Arenacross on FS1 and also hosting Race Day Live. Daniel hosts the Monster Energy Supercross post-race press conferences, does play-by-play for Endurocross on MAVTV, hosts the Main Event Moto podcast, and hosts multiple YouTube shows, including Blair’s Breakdown, which he co-produces and directs. Blair competed in the X Games, AMA Supercross, and Arenacross before becoming a full-time broadcaster. This year he transitions into the broadcast booth for six Monster Energy Supercross events.

The veteran broadcaster and announcer affectionately known as “Lurch” has worked with NBC, CBS, the Outdoor Channel, Speed, OLN, and Fox Sports over the last 23 years. He’s traveled the world covering FMX, Monster Jam, Major league Fishing, Lucas Oil Pro Motocross, and of course Monster Energy Supercross. Thirty-four years ago, he watched his first supercross race in Atlanta at the age of 18. He then became a rider, mechanic, local MX racer, FMX judge, live announcer for EA Sports, TV talent, SX VIP Host—and he’s now excited to return to where so many iconic announcers have stood before as a Race Day Live host and Monster Energy Supercross live event announcer.

Dan Hubbard grew up in Southern California riding BMX bikes, skateboards, surfboards, and motorcycles. His passion for action sports led to a partnership with Monster Energy in 2006, and he has been producing live events for them ever since. After announcing at the Monster Energy Cup in 2016, Dan joined the live hosting supercross team. This will be Dan’s seventh year hosting Monster Energy AMA Supercross. He’s happy to be back on Race Day Live alongside Daniel Blair and is looking forward to bringing excitement to stadiums across the U.S.

Indianapolis native Katie Osborne has been a motorsports and automotive enthusiast from a young age. Graduating with a Sports Communication – Broadcast degree from Indiana University, she landed her first job at the Indianapolis Motor Speedway, and her career has been filled with racing ever since. As a sports reporter and TV host going on 14 years now, Katie most recently covered Formula 1 for Amazon, Mecum Car Auctions for MotorTrend, and Rallycross on NBC/Peacock. Her career hasn’t just been entrenched in the motorsports industry— she’s also been a sideline reporter for the NFL, NHL, and the MLB for Fox Sports. Katie is excited to join the Race Day Live team for select rounds of the 2023 season and looks forward to telling the stories of the sport and its riders.

An avid motorcycle rider and powersports enthusiast, Haley Shanley has served as a TV host, producer, and trackside reporter over the past decade, covering short-course off-road racing, Snocross, Snow Bike, Ice Oval Snowmobile, Pro Watercross, regional Supercross, and Sprint Car racing. She is currently the trackside reporter for Amsoil Championship Off-Road and the play-by-play commentator for Amsoil Championship Snocross. As a motocross and street motorcycle rider, she joins the team equipped with a passion for two-wheeled racing and its tight-knit community. She considers joining the Monster Energy Supercross team in 2023 a lifelong dream come true.