The AMA Pro Motocross national championship series makes its annual stop at Spring Creek MX Park in Millville on Saturday.

All of the familiar faces will be there on the track, but there won’t be as many familiar faces in the crowd. Event organizers anticipate half -- if that many -- of the usual 20,000-plus spectators will make their way to this weekend’s races.

Here’s all you need to know about this weekend’s races:

THE VITALS

What: Round 6 of the 9-round AMA Pro Motocross national championship series.

When: Saturday. Pro practice and qualifying begins at 8 a.m., opening ceremony at 12:30 p.m., motos begin at 1 p.m.

Where: Spring Creek MX Park, near Millville. (From Rochester, take US Highway 52 north to Minnesota Highway 60, then east toward Zumbro Falls). This is the 37th time the series has visited Spring Creek.

Tickets: A Saturday-only adult general admission ticket is $51; a children’s ticket (ages 6-12) is $26.

Pro pits: The pro pits are closed to the public this year.

TV coverage: MavTV will air the first pro motos live from 1-3 p.m. Saturday. NBCSN will air the second pro motos on tape-delay, beginning at midnight. All qualifying races and motos will air online on the NBCSN Gold website.

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A 250 VIEW

What to know about the AMA Pro Motocross 250 class at Spring Creek MX Park

WELCOME BACK, J-MART: One of the hometown favorites, Jeremy Martin, will be back on the track at Spring Creek for the first time in three years. Martin suffered a severe back injury in June 2018 at Muddy Creek in Tennessee, when he and Justin Cooper collided in mid-air during a race. Martin landed hard and awkwardly and suffered a fracture of his L1 vertebrae. When the initial surgery wasn’t performed correctly, Martin underwent another operation that cost him all of his 2019 motocross season. He returned to the track at the Monster Cup last October, then raced in six Supercross races this year. He’s back full-time and he’s showing he’s the rider to beat in the 250 class this year. The two-time national champion (2014, 2015) has his sights on a third title. He comes home -- Spring Creek MX Park is owned and operated by his parents, John and Greta -- with a slim nine-point lead over Dylan Ferrandis in the 250 national standings. Martin has won three of the first five rounds this season and looks to extend his lead on a track where he’s had a lot of success. The rider of the No. 6 Geico Honda bike has won the overall two of the five times he’s raced at Spring Creek as a pro and has never finished outside of the top four.

CAN A-MART BREAK THROUGH?: Jeremy’s brother, Alex, has been a championship contender for years, but is still looking to grab his first overall win on his home track. He comes home in fifth place in the national championship standings, but he is just 12 points back of third-place rider R.J. Hampshire. A championship may be out of reach this season (he’s 58 points back of Jeremy entering this weekend), but a top-three finish is quite possible. In his second season with the JGR MX/Suzuki Factory Team, the rider of the No. 26 bike has three top-five finishes in five rounds this season. There’s no better track on the tour for Alex to chase his first win of the season than the one he made his pro debut at in 2008. In his past four races at Spring Creek, Martin has finished second overall twice and third twice. He has five career top-five finishes and eight top-10s in 12 career races at the track.

BET ON GREEN: More riders have won the 250 overall at Spring Creek on Kawasakis than any other brand of bike. Kawasakis have won 14 times at the track,including last year’s overall winner, Adam Cianciarulo. Hondas have eight wins, Suzukis have seven, followed by Yahamas (five) and KTM (one). Current 250 points leader Jeremy Martin rides a Honda.

MINNESOTA THRICE: Three Minnesotans have won the 250 overall at Spring Creek during the event’s 36-year history – Donny Schmit (1987, ’88), Ryan Dungey (2008, ’09) and Jeremy Martin (2014, ’16).

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A 450 VIEW

What to know about the AMA Pro Motocross 450 class at Spring Creek MX Park

LEADER OF THE PACK: Zach Osborne doesn’t have an insurmountable lead -- one bad moto could reduce his lead in the national points standings significantly, or knock him out of first place. But his 28-point lead with four rounds remaining provides the young rider from Abingdon, Va., some breathing room.Osborne won the 250 class national championship in 2017 before making the jump to the 450 class. The 31-year-old controls his own destiny and he has raced very well at Spring Creek in recent years (top-3 finishes in each of his last two races there).

WHERE’S ELI?: Three-time defending national champion Eli Tomac comes to Spring Creek with 47 points and two other riders between himself and points leader Zach Osborne. Tomac was dominant last season, winning five of the first 10 motos. This year, he has one moto win in the first 10. He also has one overall win this year, and fourth place in the toughest division in the toughest series in the world isn’t anything to be overlooked. But Tomac set a high bar for himself over the past three seasons. With just eight motos remaining, he has a lot of ground to make up if he wants to win a fourth consecutive national championship.

NO REPEAT FOR WEBB: Cooper Webb dominated the day at Spring Creek last summer, winning both 450 motos and the overall for the day. Webb finished seventh overall in Round 1 this season, at Loretta Lynn’s Ranch in Hurricane Mills, Tenn., back in mid-August. But during the first moto that day, he reinjured his back while landing after a jump. He rode through the pain that day, but was unable to ride any more. He’s sitting out the rest of this season to recover from multiple herniated discs. The back injury was first suffered during the Supercross season, at a race in Dallas in February.

QUALITY COMPETITION: Four different bike manufacturers have been represented as winners at Spring Creek over the past seven years: Suzuki, twice (James Stewart, 2013; Ken Roczen, 2016); KTM, three times (Ryan Dungey, 2015; Marvin Musquin, 2017; Webb, 2019); Honda (Eli Tomac, 2014); and Kawasaki (Tomac, 2018). Suzuki holds the most overall wins at Spring Creek in the 450 class (nine).

HOLY HANNAH!: Californian Bob Hannah won the first-ever 450 overall at Spring Creek, on Aug. 28, 1983, riding a Honda. Hannah repeated his win at the track two years later. Nicknamed “Hurricane,” Hannah won seven AMA national championships and 70 AMA pro national races during his 15-year career.

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RIDERS TO WATCH

450 CLASS

No. 16 Zach Osborne (Abingdon, Va.): The current 450 points leader is in his second season with the Rockstar Energy Husqvarna Factory Racing team. The 2017 AMA Pro Motocross 250 class champion has been red-hot to start this season, winning the overall at three of the first five rounds. Osborne has a 28-point lead over Marvin Musquin.

No. 25 Marvin Musquin (La Reole, France): Musquin hasn’t had a bad day at Millville in his four-plus seasons in the 450 division. He won the overall at Spring Creek in 2017 and also has one second-place finish, one third, and one fourth. He sits second in the points standings entering this weekend and has finished in the top four in the overall in all five rounds this year.

No. 9 Adam Cianciarulo (Port Orange, Fla.): The winner of the 250 overall at Spring Creek last season, Cianciarulo moved up to the 450 class this year and is off to a strong start, sitting third in points. Last year’s 250 national champion earned his first overall win on a 450 two weeks ago at Red Bud in Buchanan, Mich.

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250 CLASS

No. 6 Jeremy Martin (Millville, Minn.): The two-time national champion (2014, ‘15) is back at Spring Creek for the first time in three years. Fully healthy after battling a severe back injury for much of 2018 and 2019, Martin is riding as well as anyone in the 250 class. He’s looking to win his first championship since joining Honda in 2017.

No. 14 Dylan Ferrandis (Avignon, France): Ferrandis won the overall at the season opener, and has finished second overall in three of the past four rounds to keep pace with Jeremy Martin. Ferrandis was the runner-up in last year’s points standings, then he won the 250 Supercross West championship this spring.

No. 26 Alex Martin (Millville, Minn.): One of hte hometown favorites, Martin has finished second overall at his home track in two of the past three years. He sits fifth in the points standings and is looking for his second podium (top-three) finish this season.

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POINTS STANDINGS

AMA MOTOCROSS

(Through 5 of 9 rounds)

450 CLASS

Zach Osborne 212

Marvin Musquin 184

Adam Cianciarulo 170

Eli Tomac 165

Justin Barcia 160

Blake Baggett 146

Chase Sexton 140

Broc Tickle 125

Christian Craig 112

Dean Wilson 97

250 CLASS

Jeremy Martin 216

Dylan Ferrandis 207

R.J. Hampshire 170

Shane McElrath 166

Alex Martin 158

Justin Cooper 132

Jett Lawrence 127

Cameron McAdoo 125

Mitchell Harrison 101

Brandon Hartranft 95

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PAST OVERALL WINNERS AT SCMX PARK

2019

450 — Cooper Webb, KTM

250 — Adam Cianciarulo, Kawasaki

2018

450 — Eli Tomac, Kawasaki

250 — Aaron Plessinger, Yamaha

2017

450 — Marvin Musquin, KTM

250 — Joey Savatgy, Kawasaki

2016

450 — Ken Roczen, Suzuki

250 — Jeremy Martin, Yamaha

2015

450 – Ryan Dungey, KTM

250 – Cooper Webb, Yamaha

2014

450 – Eli Tomac, Honda

250 – Jeremy Martin, Yamaha

2013

450 – James Stewart, Suzuki

250 – Eli Tomac, Honda

2012

450 – Ryan Dungey, KTM

250 – Eli Tomac, Honda

2011

450 – Ryan Dungey, Suzuki

250 – Tyla Rattray, Kawasaki

2010

450 – Ryan Dungey, Suzuki

250 – Trey Canard, Honda

2009

450 – Chad Reed, Suzuki

250 – Ryan Dungey, Suzuki

2008

450 – James Stewart, Kawasaki

250 – Ryan Dungey, Suzuki

2007

450 – Ricky Carmichael, Suzuki

250 – Ryan Villopoto, Kawasaki

2006

450 – Ricky Carmichael, Suzuki

250 – Broc Hepler, Suzuki

2005

450 – Ricky Carmichael, Suzuki

250 – Andrew Short, Honda

2004

450 – Ricky Carmichael, Honda

250 – James Stewart, Kawasaki

2003

450 – Ricky Carmichael, Honda

250 – James Stewart, Kawasaki

2002

450 – Ricky Carmichael, Honda

250 – James Stewart, Kawasaki

2001

450 – Ricky Carmichael, Kawasaki

250 – Grant Langston, KTM

2000

450 – Ricky Carmichael, Kawasaki

250 – Travis Pastrana, Suzuki

1999

450 – Greg Albertyn, Suzuki

250 – Nicholas Wey, Kawasaki

1998

450 – Jeff Emig, Kawasaki

250 – Ricky Carmichael, Kawasaki

1997

450 – Jeff Emig, Kawasaki

250 – Ricky Carmichael, Kawasaki

1996

450 – Jeff Emig, Kawasaki

250 – Steve Lamson, Honda

1995

450 – Mike Kiedrowski, Kawasaki

250 – Robbie Reynard, Kawasaki

1994

450 – John Dowd, Yamaha

250 – Steve Lamson, Honda

1993

500 – Jeff Stanton, Honda

250 – Jeff Emig, Yamaha

1992

500 – Jeff Stanton, Honda

250 – Mike LaRocco, Kawasaki

1991

500 – Jean-Michel Bayle, Honda

250 – Mike LaRocco, Kawasaki

1990

500 – Jeff Stanton, Honda

250 – Mike LaRocco, Suzuki

1989

500 – Jeff Ward, Kawasaki

250 – Damon Bradshaw, Yamaha

1988

500 – Rick Johnson, Honda

250 – Donny Schmit, Suzuki

1987

500 – Rick Johnson, Honda

250 – Donny Schmit, Suzuki

1986

500 – Rick Johnson, Honda

250 – Micky Dymond, Honda

1985

500 – David Bailey, Honda

450 – Bob Hannah, Honda

250 – Ron Lechien, Honda

1984

500 – David Bailey, Honda

450 – Ron Lechien, Honda

250 – Jeff Ward, Kawasaki

1983

500 – Danny Chandler, Honda

450 – Bob Hannah, Honda

250 – Ron Lechien, Yamaha