DES MOINES -- Hannah Petersen fired a perfect game with 16 strikeouts to lead Jefferson past Iowa City Regina, 4-0, Saturday afternoon at the Jack North softball tournament.

Jefferson's Rachel Sedlacek led off the game with a home run for the third time in the last four games and finished with two hits and two runs scored.

Kenna Fry added two RBIs.

Jefferson improved to 23-3. The J-Hawks' game against Wilton was rained out.