RUSTON, La. (AP) — Blake Baker threw three touchdown passes and Jordan McRae and Jadon Mayfield both returned an interception for back-to-back scores as Louisiana Tech steamrolled Southern Mississippi 63-31 on Saturday night. Baker completed 21 of 28 passes for 236 yards for the Bulldogs (8-2, 6-0 Sun Belt Conference). Kolbe Fields picked off a The post Blake Baker, Jordan McRae, Jadon Mayfield spark Louisiana Tech to 63-31 romp over Southern Mi…