Ernesto Frieri went 3-3 with two saves and a 3.93 ERA in 26 games for the Eugene Emeralds. In 36.2 innings he allowed 31 hits, walked 15 and struck out 38. The opposition hit .237 off him with three homers.

Frieri went 0-0 with a 6.00 ERA in two games for the Lake Elsinore Storm from July 3-9. In six innings he allowed eight hits, walked three and struck out four.

Frieri made one appearance with the Fort Wayne Wizards, allowing four runs, one earned, on one hit and five walks in an inning of work.

2005

Making his first appearance in the United States, Frieri went 7-1 with a 1.17 ERA over 17 appearances for Peoria, including five starts. In 46.1 innings in the desert, he struck out 59 while walking 29.

Frieri also went 0-0 with a 2.70 ERA in two late-season appearances for the Lake Elsinore Storm.