While the everyday, sure-fire big leaguers are relatively easy to enumerate, others are a little more complicated. According to Dallin, the clubhouse staff polls those players during Spring Training, determining which number they would have if they were to get the call.
Monday night's starter, Casey Kelly, was one of those players, and identified No. 29 as his ideal choice if he were to be called up. But another youngster on the cusp, Brad Boxberger, had already requested it, and therefore "boxed" Kelly out to his current 49.
But the influx of new faces meant that Prilaman and his staff couldn't record predispositions from everybody, so some players, such as relievers Cory Burns (61) and Nick Vincent (50), were just assigned numbers based on what was available.
"For me, it didn't matter. Whatever number I wanted was probably going to be taken," Vincent said. "I thought I was going to be 64 because that's what I was in Spring Training, but I got here and saw 50 and was like, 'Oh, that's different.' Numbers are just numbers to me."
Dallin said the staff tries to accommodate requests as much as possible, but if a new veteran comes in and requests a number held by a rookie, seniority generally wins out. San Diego's had five numbers (1, 38, 39, 40, 41) worn by multiple players this season.
"In a season like this, we start running out of numbers," Dallin said. "That's why you see a guy like Kip Wells wearing No. 60 because it was what was available."
And while some veterans may be concerned for superstition purposes, the fact that most of the new faces have been new Major Leaguers means that they are less concerned with what their number is, and more with the fact that they have one at all.
"I don't care, I've got a big league number," Burns said. "As long as you've got a jersey, you're all right."