The kick was set up by an interception by Justin Reid, who grabbed a Josh Rosen pass that deflected off Ucla tight end Caleb Wilson.
Costello, a redshirt freshman from Santa Margarita High, replaced Ryan Burns, who had taken over after starter Keller Chryst got his bell rung with what looked like a helmet-to-helmet hit from UCLA's Adarius Pickett.
The Bruins also played the first half without defensive tackle Osa Odighizuwa, who had to sit out as punishment for a targeting penalty in the fourth quarter last week against Memphis.
What struck UCLA coach Jim Mora most when he watched recent tutorials on stopping Stanford wasn’t so much intense defensive pressure or inventive schemes.
The Bruins probably won’t be able to produce the kind of clock-burning run game that helped USC and San Diego State engineer victories over the Cardinal, putting the burden on Rosen to be almost perfect.
- Stanford-UCLA: Live updates, score, analysis for Week 4 game (9/23/2017)DieHards
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- UCLA Bruins at Stanford Cardinal Game ThreadBruins Nation
- Football predictions: Stanford vs. UCLAThe Stanford Daily
- UCLA defense fortified by return of Young, WadoodLos Angeles Times
- College Football Week 4 Predictions: UCLA vs. Stanford 9/23/17TheSpread.com
- Football Roundtable: Can the offense be effective against UCLA?The Stanford Daily