The secret to success in midweek college baseball is simple.   "It starts on the mound,'' said Bradley coach Elvis Dominguez after the Braves defeated Illinois 6-3 Tuesday. "If your midweek guys can't give you innings, you're in trouble.''   Senior left-hander Tory Doerr threw 4 1/3 innings of no-hit ball, then gave up one run on three hits in five innings, and the Braves avenged a 6-3 loss to Illinois in Peoria last week. In the process, Doerr (1-2) likely locked up a slot as a regular midweek starter after serving as a weekend starter last season.   "This time, we said we'd throw him out there and see how far he takes us,'' Dominguez said. "He's a guy who has to help us out in midweek games.''   Bradley (14-11-1) won its third consecutive game after four relievers each pitched an inning. The Braves host Missouri State in Missouri Valley play Friday through Sunday.   After catcher Austin Jarvis' solo homer in the sixth, center fielder Max Murphy doubled home two runs in the three-run seventh for a 6-1 lead. The Illini (15-11) scored two runs in the ninth, but fundamental mistakes left them too far behind.   "We didn't execute in baseball situations,'' Illinois coach Dan Hartleb said. "Runner on third and less than two outs, we don't put the ball in play. We make a baserunning error at second base. There are things we could have done to be two runs down going into the ninth inning. Basic, simple fundamentals.''   The loss ended a four-game winning streak for Illinois. The Illini won the Big Ten last season but struggled in midweek games between Big Ten series, posting a 3-6 record against instate foes. Illinois is 1-2 thus far in midweek games after the start of Big Ten play.   "They hit the ball on the screws all night,'' Dominguez said. "It was just right at us. We executed and moved runners over when we needed, then we were able to get some fly balls and base hits to open it up a bit.''   The Illini host Indiana Friday through Sunday in the Big Ten home opener.   John Supinie can be reached at Johnsupinie@aol.com. Follow him on Twitter @JohnSupinie.