The game was suspended temporarily in the seventh because of lightning in the vicinity.
Concordia (41-19) will participate in another elimination game at 3 p.m. today at the same venue.
After suffering a 9-3 loss to Embry-Riddle on Saturday, Casey and Concordia staved off elimination Monday with a 7-5 victory against Oklahoma Baptist University.
Casey, a La Crescenta resident, finished with two hits and scored a pair of runs to help propel the Eagles. He singled and scored in the second and sixth innings.
Mark Saatzer (St. Francis High, 2010) freshman utility player, Chapman University baseball: It proved to be quite a banner season for Chapman, which saw its season come to a close Tuesday with an 18-5 loss to top-seeded Marietta College in the if-necessary championship game of the NCAA Division III championship game at Fox Cities Stadium in Grand Chute, Wis. Earlier Tuesday, Chapman (37-13) forced the extra game with a 15-4 win against Marietta.
Saatzer, a reigning All-Area second-team honoree, went hitless in five at-bats during the final game. He also had nine putouts while patrolling first base. In the earlier game, Saatzer had one hit and scored twice. He also had eight putouts.
Marietta broke the game open in the third, as it scored seven runs to take a 9-1 lead.
In another elimination game Monday, Saatzer came through with three hits in Chapman's 3-2 win against Buena Vista University. He had a game-tying single in the seventh.
Saatzer finished the campaign batting .317 (60 for 189) with nine doubles and five stolen bases. He scored 33 runs in 48 games.