The assumption is the Padres want to keep Cashner from facing the team he will likely face on Opening Day on March 30, even though manager Bud Black hasn't named him as the starter.
At any rate, Cashner allowed five hits over 5 2/3 innings and left after 73 pitches feeling good about his slider and changeup, but not necessarily about the last batter he faced, Rangers' Minor Leaguer John Brown.
After retiring the first two batters of the sixth inning, Brown lifted a high fly ball to deep center field that appeared to bounce on the warning track and then over the fence. Brown, however, kept on running -- despite the protests from the Padres' dugout.
The Minor League umpire crew conferred briefly before sticking to the original call -- a home run.
"It was interesting," Cashner said afterwards, smiling. "I guess that's the way it goes down in the Minor Leagues. If they want to call it a home run, he can call it a home run.
"I don't let it get me worked up. But if it was in-season in the big leagues ... it would have been a little different story, but we have replay."
That was the last batter Cashner faced, as he wasn't to throw more than 75 pitches. He struck out three and didn't walk a batter. Cashner got seven ground-ball outs, including two double-play balls in the second and fifth innings on two-seam fastballs.
"I threw a lot of sliders, a lot of changeups, I haven't thrown a lot of those recently. It was a day where I threw five changeups in a row today. It was trying to get a feel for the pitches," Cashner said. "When I got into some trouble, I was able to go in and get the ground ball I like to get.
"I feel right where I want to be."
Cashner hasn't allowed a run in a Cactus League game in nine innings.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.