Mordecai throws 3 more TDs, No. 21 SMU beats Tulane 55-26

  • SMU wide receiver Danny Gray (5) makes a catch over Tulane defensive back Lance Robinson (7) during the second half of an NCAA college football game in Dallas, Thursday, Oct. 21, 2021. (AP Photo/Michael Ainsworth)

  • Tulane quarterback Michael Pratt (7) looks for a receiver during the first half of the team's NCAA college football game against SMU in Dallas, Thursday, Oct. 21, 2021. (AP Photo/Michael Ainsworth)

  • SMU defensive end Turner Coxe, right, sacks Tulane quarterback Michael Pratt during the first half of an NCAA college football game in Dallas, Thursday, Oct. 21, 2021. (AP Photo/Michael Ainsworth)

  • SMU tight end Tommy McIntyre (86) runs after catching a touchdown pass in front of Tulane linebacker Kevin Henry (33) during the first half of an NCAA college football game in Dallas, Thursday, Oct. 21, 2021. (AP Photo/Michael Ainsworth)

  • SMU running back Tre Siggers (4) celebrates with quarterback Tanner Mordecai (8) after Mordecai scored a rushing touchdown against Tulane during the first half of an NCAA college football game in Dallas, Thursday, Oct. 21, 2021. (AP Photo/Michael Ainsworth)

DALLAS — Tanner Mordecai threw three touchdown passes to push his nation-leading total to 29, ran for another score and No. 21 SMU dominated the first half in a 55-26 victory over Tulane on Thursday night.