Renteria scored two of Southwest's goals. Juan Garcia was credited with the other two, although one deflected off a Central defender.
Both coaches said the Spartan defense did a good job of shutting down Mora.
"I told our players you can't always rely on Joshua," Southwest coach Rafael Contreras said. "He was marked, followed everywhere.
"I told them they have to start playing as a team," Contreras continued. "When they did that, we started scoring."
It took Southwest nearly 24 minutes to finally slip a ball into the net. Renteria centered a perfect ball. Central's goalie got a foot on the ball to deflect it away from the net, but Garcia was there to punch the ball back in for the score.
Eight minutes later Garcia got his second goal. Coming in from the right side, Garcia took a shot on goal that glanced off a Central defender.
"Our goalie was telling him to clear the ball," Graham said, but an unlucky bounce slipped the ball into the net.
Just before half-time Renteria scored to give Southwest a 3-0 lead. Renteria drilled the ball just under the diving, rolling Spartan keeper.
Renteria added his second goal with seven and a half minutes left in the game. Armando Ponce passed the ball ahead to Montes, who took a hard shot on goal.
Central's goalie deflected the shot but Renteria was in the right place to put back the carom for the goal.
"We showed tonight we're more than a one-man team," Contreras said.
While Mora may be the star, there are others the Eagles can go to for scoring. Mora even sat out part of the second half.
"He has a bad ankle and he needs to rest and get ready for CIF," Contreras said.
While Central was shut out, the Spartans still had their chances.
Luis Lozano got off a hard shot in the first half that Eagle keeper Ivan Ochoa saved. Seconds later, Salim Ruiz headed the ball off a pass from Eduardo Arreola that Ochoa again hauled in.
In the second half, Luis Jimenez passed ahead to Ruiz only to have Ochoa somehow come away with the ball. Moments later Jimenez got behind the defense and took a shot from point-blank range, only to have Ochoa come up with the save.
Calexico 1, Brawley 0
BRAWLEY — Eduardo Barron scored the game's lone goal Thursday as Calexico High's boys soccer team edged host Brawley Union High 1-0.
The Bulldogs finished the regular season tied for first in the Imperial Valley League with Southwest High (9-1).
Central 3, Southwest 0
Central Union High's girls soccer team defended its Imperial Valley League title in style with a 3-0 win over cross-town rival Southwest High in El Centro Thursday.
The Spartans recorded their 13th straight win and finished league play with an 11-0-1 mark. Central carries a 17-6-1 record into the first round of the CIF San Diego Section playoffs Tuesday.
Ana Nava, Marisol Rodriguez and Rosa Murillo each scored a goal against Southwest. Vanessa Long had two assists and Alma Gutierrez had one. Goalie Clarissa Maldonado posted her 13th shutout.
Calexico 5, Brawley 0
CALEXICO — Perla Ambriz scored two goals Thursday as Calexico High's girls soccer team shut out Brawley Union High 5-0.
Priscila Macedo, Diana Martinez and Erendira Avila all added one goal for the Bulldogs (9-1-1 IVL).