Week 4
Los Angeles Memorial Coliseum

Michigan State31 @FINAL 45USC , Week 4, Sep 21, 2025

3-0 Big Ten Power rating: 3.6
3-0 Big Ten Power rating: 20.0

How did the line hold up?

Market line
USC -18.5
PM Implied
USC -12.0
Blue Chip model
USC -20.4
Edge
+1.9USC
See details
◂ favors MSUfavors USC ▸Market: USC -18.5
16.4 › USC
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1 MSU1 USC2 MSU2 USC3 MSU3 USCModel: USC -20.4

Betting information

Spread
USC -18.5
Total
55.5
Odds implied score
MSU 18.5 – 37.0 USC
Prediction markets
USC 89% win chance (Kalshi)

DraftKings · as of July 8, 2026

USC defeated Michigan State 45–31 in a double-digit victory. Michigan State covered by 4.5; Game went Over by 20.5. The market closed at USC -18.5 and the Blue Chip model made it USC -20.4, an edge of 1.9 points toward USC.

What are the key factors for Michigan State vs USC?

Michigan State

Injury and Depth Concerns

Linebacker Wayne Matthews was injured and carted off before halftime, and Jordan Hall was ejected for targeting, forcing Michigan State to play the second half without two key defensive starters. This could impact depth and preparation during the bye week.

Offensive Bright Spots Despite Loss

Quarterback Aidan Chiles accounted for 243 of the team's 333 total yards, throwing three touchdown passes and rushing for another. The offense showed resilience with a 75-yard TD pass to Omari Kelly late in the game, indicating potential for explosive plays.

Slow Start and Defensive Struggles

Michigan State allowed USC to score touchdowns on four of five drives after the first quarter, falling behind 31-10 at halftime. The defense struggled to contain USC's high-powered offense, which racked up 517 yards, highlighting areas to address during the bye.

Character and Comeback Effort

Despite the injuries and deficit, the Spartans showed character by rallying in the second half, scoring 21 points and making the game competitive. This resilience could build confidence heading into the next game against Nebraska.

Bye Week Opportunity for Adjustment

With a bye before visiting Nebraska on Oct. 4, Michigan State has extra time to heal injuries, correct defensive issues, and prepare for a conference opponent. The extra preparation could be crucial for improving their 3-1 start.

What were the weather conditions for Michigan State vs USC?

At kickoff, conditions at Los Angeles Memorial Coliseum were Partly cloudy, 67°F with winds of 3 mph. Weather is not expected to be a meaningful factor in this game. Historical weather data for this game is preserved in the panel alongside. Weather data is sourced from WeatherAPI.com.

What happened in the game?

Michigan State travels 1,917 miles to this game, a cross-country trip.

That is a westward shift of 3 time zones, the one travel pattern Blue Chip has measured as carrying a consistent price: about 0.9 points, with the distance burden already inside it.

USC won by 14 in a double-digit victory.

Michigan State covered the spread.

The total went Over by 20.5 points.

How do Michigan State and USC compare on power ratings?

Blue Chip Analytics power ratings favor USC (20.0) over Michigan State (3.6) by 16.4 points on a neutral field. After adding home field advantage, the rating-implied line may differ meaningfully from the market spread. USC brings one of the stronger home environments in the FBS to this matchup (Blue Chip HFA: 3.1). Add this to the neutral-site differential to arrive at a venue-adjusted line.

Blue Chip Analytics power ratings represent expected point margin against an average FBS opponent on a neutral field, calculated from game data sourced via CollegeFootballData.com (CFBD). They are one input: cross-reference with the travel, rest, and weather data above before drawing conclusions.

Sources

Weather

USC won and Michigan State covered the spread.

Conditions

as of September 21, 2025 Game-time

Partly cloudy

67°F

Rain0%
Precip0.00"
Humidity90%
Wind3 mph SSE
Gusts4 mph
Wind map for Michigan State at USC: aerial view of Los Angeles Memorial Coliseum, wind from the SSE at 2.7 mph, gusting to 3.6 mph

Quick facts

Week
Week 4
Kickoff (local)
08:00 PM PDT
Venue
Los Angeles Memorial Coliseum
Capacity
77,500
Elevation
177 ft
Surface
Grass

Travel and rest

Measure Michigan StateAway USCHome
This week1,917 miles0 miles
Last weekHome game3,551 miles
Season total1,917 miles3,551 miles
Body clock23:0020:00
Rest8 days8 days