Patrick Corbin was brimming with confidence as he began his third stint this season with the Arizona Diamondbacks, convinced that he belonged with the big club on a permanent basis. His solid outing against the Los Angeles Dodgers only confirmed that notion. The 23-year-old left-hander pitched two-hit ball over six innings following his promotion from Triple-A Reno on Wednesday, and the Diamondbacks got home runs from Miguel Montero and newcomer Chris Johnson in a 4-0 victory that completed their first three-game sweep at Dodger Stadium since 2007.