De Matha takes it 24-0 record and top national ranking to Frostburg State College today for the opening round of the 17th annual Alhambra Invitational Catholic Tournament.

Metropolitan Conference foe Mackin (24-4) also is included in the eight-team field, but the Trojans will need to win two games before possibly gaining a third and final chance to shoot down defending champion De Matha.

Mackin opens the three-day classic today with a 5 p.m. battle with West Catholic of Philadelphia (20-8). The remainder of today's schedule has host Bishop Walsh of Cumberland (16-6) meeting Loyola of Baltimore (24-5) at 6:15; Father Judge of Philadelphia (27-3) playing Monsignor Nolan of Fort Worth, Tex., (26-5) at 8, and De Matha squaring off against Cardinal Gibbons of Baltimore (20-5) at 9:30.

The affair, which previously crowded as many as 2,300-2,400 fans into the 2,100-seat gym of Allegany High School in Cumberland, makes its debut this year in the 3,700-capacity facility of Frostburg State.

De Matha Coach Morgan Wootten will be shooting for his first undefeated season in his 22 years at De Matha, whose basketball program was the feature of a story in Times magazine this week. His 1964-65 squad, which defeated Power Memorial and Lew Alcindor, 46-43, went 25-1 with its only loss by one point to the University of Maryland freshmen in the season's final contest.