BALTIMORE, JULY 11 -- Frank Viola, buoyed by a strong feeling of confidence, turned in his second straight standout start in leading the Minnesota Twins to a 2-1 win over the Baltimore Orioles tonight.

Viola (8-6) held Baltimore to eight hits, all singles. The left-hander, who pitched a shutout Monday night against the Yankees, has given up just one run in his last 18 innings, lowering his earned run average to 2.96.

"When you have your confidence, you don't feel like you can be beat," said Viola, who is 6-2 with a 1.99 ERA in his last 11 starts. "It's not cockiness. It's a fact, when you feel good about yourself, it makes all the difference.

"I'm not doing anything special. I'm just trying to do my job. My motto is to keep the team in the game."

After the Orioles scored a run in the third inning on a high infield chop that third baseman Gary Gaetti lost in the lights, the Twins bounced back on solo homers by Randy Bush and Gaetti.

Gaetti hit his 16th homer with one out in the sixth to end a 1-1 tie.

Viola, who pitched a five-hit shutout against the Yankees Monday night, limited Baltimore to eight singles for his eighth victory in 14 decisions. He struck out five and walked two.

Viola outdueled Mike Griffin (1-3), who allowed just five hits.

Second baseman Billy Ripken and shortstop Cal Ripken Jr. made major league baseball history in the game, becoming the first brother combination to be managed by their father, Cal Ripken Sr. Billy Ripken was called up from Rochester Friday.