The Los Angeles Dodgers roughed up Trevor Cahill twice near the beginning of the season, leading to his demotion to the Arizona Diamondbacks' bullpen that preceded a one month-plus stay in the minors. A rejuvenated Cahill hopes to show the NL West leaders how much he's improved since then. Los Angeles looks to win for the 10th time in 13 road games as it faces the right-hander in the opener of a two-game set with the Diamondbacks on Tuesday night. The Dodgers (74-58) began the season with two victories over the Diamondbacks (55-76) in Australia, sweeping that set by tagging Cahill for five runs and eight hits through four innings of a 7-5 victory March 23.