Monday night’s Giants-Diamondbacks game featured three Giants rookies in the starting lineup, with another one collecting an RBI single as a pinch-hitter. Rookies had five of the Giants’ nine hits on the night, and they’ve been distributing feel-good stories to a fan base that’s been desperate for them.The Giants are a team in transition, but don’t pull the “rebuilding/contending” binary out just yet. They’re unlikely to cast all of their veterans aside, mostly because of financial considerations, no-trade clauses and other logistics, but they’re likely to keep starting plenty of rookies from now until the end of the season.This is almost certainly a good thing. Let’s hope there are fewer hiccups going forward. Because it’s been a little weird over the last month.We’ll start with two disclaimers. The first is that this is going to be a post talking about the playing time of rookies who have made their debuts recently, specifically focusing on Jonah Cox and Victor Bericoto, but Cox has started each of the last two games, and Bericoto was included in Monday night’s lineup with him and Heliot Ramos to form an all-righty outfield. It’s possible this article is less a “call to action” and more of a “here’s what the Giants are already doing.”The second disclaimer is that I legitimately don’t know who makes the lineup in modern baseball. It’s not the manager, but it’s not not the manager. It’s not the front office, but it’s not not the front office. It’s the product of collaboration.With that, we’ll start with a chart. I have to warn you about the chart, though: You might not be ready for the flashes of nostalgia and guy-remembering that are about to overtake your brain.Here is every Giants prospect with more than 10 at-bats in the majors over the previous decade, along with how long it took them to start their fifth game in the majors:PlayerDate of debutGames until fifth startChristian Arroyo4-24-20175Austin Slater6-2-20178Ryder Jones6-24-20175Steven Duggar7-8-20186Chris Shaw8-31-20187Jaylin Davis9-4-20196Joey Bart8-20-20206Heliot Ramos4-10-20226David Villar7-4-20225Casey Schmitt5-9-20235Patrick Bailey5-19-20237Luis Matos6-14-20235Marco Luciano7-26-20235Wade Meckler8-14-20235Tyler Fitzgerald9-21-20235Grant McCray8-14-20245Drew Gilbert8-8-20256Bryce Eldridge9-15-20257Jesús Rodríguez5-4-20266Victor Bericoto5-22-202619Jonah Cox5-31-202621Note that this is not every rookie. You can find a full list here and quibble with my work, but the cutoff line is a rhetorical question of “When he was called up, was it reasonable for the Giants to think this player could develop into an everyday player?” That’s why Austin Slater barely squeaks on, but Miguel Gómez does not. I’ve also excluded minor-league veterans like Trenton Brooks and Mike Yastrzemski, as well as Jung Hoo Lee, who was given starter money to start, not prospect money to prospect.Add or remove a name up there, though, and the general point stands: When the Giants have called up a prospect with everyday potential over the last decade, he starts, at least at first. He gets a runway to see what he can do against the toughest competition in the world, and if it’s initially overwhelming, the starts dry up and a return trip to Triple A is recommended. This is exactly what the Giants did with Jesús Rodríguez earlier this year, so it’s not a lost art.Look at the numbers for Bericoto and Cox, though. Their promotions were logistical responses to various outfield injuries (Harrison Bader, Ramos, Lee), but Cox and Bericoto were still buried. And by buried, we’re talking absolute ghosts. Between June 10-20, Bericoto didn’t get a single at-bat. In the nine games before that, he got 12 plate appearances in nine games over a span of two weeks. This was also a fallow stretch for Cox. From June 6-21, he had just seven plate appearances in nine games. From June 10-23, he didn’t take a single at-bat at all, as he was being used only as a pinch-runner or defensive replacement.