JACKSON, Miss. (AP) _ William Arnold set a Division I-AA single game rushing record with 346 yards Saturday to lead Jackson State to a 38-12 victory over Texas Southern.

Arnold, who also broke Walter Payton's single-game school record, surpassed the mark of 345 yards set by Russell Davis of Idaho against Portland State in 1981.

Arnold scored four touchdowns on runs of 3, 5, 16 and 48 yards. He had 237 yards in the first half, leaving him 42 yards shy of Payton's record.

Jackson (4-4-1 overall, 2-2-1 Southwestern Athletics Conference) scored on its first four possessions and never trailed. The Tigers had 357 yards of offense in the half and finished with 503.

Texas Southern (2-7, 2-4) scored its first touchdown on 18-yard pass from Schmanisky Peyton to Joe Rogers with 9:02 left in the first quarter, but the extra point failed and they trailed 7-6.

That was the closest Texas Southern would get as Jackson St. added 10 fourth quarter points and its defense forced three turnouvers in the second half.