SAN FRANCISCO — Tony Vitello had to wait four games for his first celebratory beer shower, which felt like an eternity for the new Giants manager. Daniel Susac’s wait was a little over a week. He didn’t start a game until the Giants began their first series of the year, but he was so good last Thursday that he was rolled into the showers with Blade Tidwell, who was celebrated for his first save in his fifth big league appearance. Matt Gage has had to be more patient. A lot more patient. Gage’s big-league debut came eight years after he was drafted, and by that time he was on his fourth professional organization and had experienced a stint in the Mexican League. He finally got the call from the Toronto Blue Jays on June 6, 2022. Once again, he was told to wait. The Blue Jays played in Kansas City that night and the game was delayed by such steady rain that Gage’s teammates asked for it to be postponed. They played on, and when the bullpen phone rang at midnight of a blowout, one of Gage’s fellow relievers said he could have the inning if he wanted it. At 1 a.m. that night, Gage got his first big-league beer shower, a...