SYDNEY — Davis Webb threw four touchdown passes and ran for another score in a sensational debut for California, leading the Bears to a 51-31 win over Hawaii on Saturday in college football's season opener at Sydney's Olympic stadium.

Khalfani Muhammad had 94 yards rushing and one touchdown, and Chad Hansen had 14 receptions for 160 yards and two scores to help Cal win the game played Down Under as a tourism initiative and to increase awareness of "gridiron" in the country.

The teams provided plenty of early entertainment for unfamiliar fans, scoring two touchdowns each by midway through the opening quarter.

But Webb, the graduate transfer from Texas Tech replacing Jared Goff — the No. 1 overall NFL draft pick by the Los Angeles Rams — helped move Cal into control in the second quarter.

Hawaii fumbled on a kickoff following Matt Anderson's second field goal for Cal, and Webb's 34-yard pass to wide Hansen on the next play gave Cal a 27-14 lead.

Webb got into the act himself, rushing three yards off-tackle for another Cal touchdown and a 34-14 halftime lead. Webb was 38 for 54 and 441 yards total passing with no interceptions.

Hawaii was led by wide receiver Marcus Kemp with four receptions for 73 yards and one TD. Ikaika Woolsey was 17 for 34 and 234 yards passing with one TD and one interception.

Hawaii was without three key players for unspecified disciplinary reasons. A Rainbow Warriors spokesman said just before the game began that safety Daniel Lewis Jr., linebacker Jerrol Garcia-Williams and tight end Metuisela Unga were not with the team Saturday.