MASON CITY — Twenty-five by Mason City in the third was the difference in an otherwise very close game at the Spencer basketball girls traveled to take on the Riverhawks. Trailing by two points at the intermission, Mason City more than doubled up on the Tigers, outscoring their guests 25-12 to secure the 53-38 victory. The loss dropped Spencer to 4-6 while the Riverhawks moved to 6-4.