Ross is committed to UCLA, and like the Padres' second-round pick and Ross' potential future teammate, Austin Hedges, he's expected to be a tough sign.
"I actually talked to [Hedges] this week," Ross said. "He said he wasn't sure what he was going to do either so, I mean hopefully, whichever way I go, I can stay with him."
The Padres hope that the two of them will stay together as well -- in their organization.
Padres manager Bud Black watched Ross throw, and he liked what he saw.
"First thing you look for is just the arm action: how he separates his hands, where his hand is on the ball, how that circle works, how that throwing motion works," Black said. "It's a very clean arm action. It's a live arm. He's got good size and strength. Solid throwing mechanics and he's 18 years old. I like him a lot.
"Joe Ross threw well. We've got to get him on the dotted line, keep him away from UCLA."
Ross' older brother, Tyson, is a pitcher for the Oakland A's and has encouraged his brother to make the decision that makes him most happy.
Ross said meeting everyone on Saturday, especially on a personal level, will make his decision that much tougher, especially since he's getting the same from the UCLA side of things.
"I've talked to the head coach a couple of times," Ross said. "He's just kind of trying to get me to go down to school but I don't know. It's kind of undecided so far right now."
Ross has a good set of tools to work with as is, and the Padres are hoping they'll be the ones developing those skills.
"I've got a power fastball and plus breaking pitches that I can throw pretty much any time in the count," Ross said.