JOLIET, Ill. --- Campbellsville University (Ky.) senior righthander Eric Mattos silenced the University of St. Francis bats in the second game of the 2010 NAIA Baseball National Championship Opening Round en route to a 3-0 victory at Silver Cross Field Thursday afternoon.

Mattos, who went the distance for the seventh time in 12 starts, allowed just one hit through the first seven innings before settling for a four-hit shutout. It was his second shutout of the season.

"The young man from Campbellsville pitched one heck of a game," said USF head coach Gordie Gillespie, whose team lost back-to-back games for the first time since April 5-6. "He kept us out of sync most of the afternoon and we were never able to get anything going."

Campbellsville (41-20) took a 2-0 lead in the second inning when four of the first five Tigers to bat laced singles including run-producers by designated hitter Zac Townsend and centerfielder Jameel Ziadeh. The lead held at that mark until the eighth inning when catcher Richie Rowland connected on his 10th home run of the season. It was the third hit of the game for Rowland in four at bats.

Neither team mounted any other serious scoring threats the rest of the afternoon with no Saint runner getting beyond second base. That only happened twice, once in the seventh inning and the other time in the ninth. Both times, however, came with two outs.

First baseman Joe Ruge (Riverside-Brookfield H.S./North Riverside, IL) accounted for half of USF's offense producing a pair of singles.

Third baseman Craig Edwards also had a pair of hits for Campbellsville, which came into the contest as the No. 2 seed in the tournament and ranked 21st in the nation.

Sophomore Matt Huck (Marian Central Catholic H.S./McHenry, IL) suffered the loss for the Saints. It was his first loss of the season opposite six wins.

With the victory, Campbellsville advanced to the winner's bracket where the Tigers will meet top-seeded and No. 2-ranked Cumberland (Tenn.) at 3 p.m. on Wednesday.

St. Francis (34-15) faces Mayville State University (N. Dak.) in an elimination game Wednesday morning at 11 a.m. with that winner going up against Robert Morris University Wednesday night at 7 p.m.

In Tuesday's other games, No. 3 seed Robert Morris (40-18) rallied for four runs over the final three innings to upend No. 5 seed Mayville State, 5-2, in the first game of the day. The Eagles, however, could not get by Cumberland (Tenn.) (51-9) in the first-day finale losing 8-0.

The double-elimination tournament runs through Friday at Silver Cross Field.