PEORIA, Ariz. — A day before he would throw the first pitch of the Tony Vitello Era, Hayden Birdsong sat in front of his locker at Scottsdale Stadium and talked at length about how encouraged he was by his offseason. Birdsong spent all winter in Scottsdale and felt he found some mechanical fixes that would help him stay in the zone more often. “We’ll see what happens when I get in the game,” he said Friday. “Hopefully I don’t lose everything, but I don’t think I will.”In the box score, Saturday’s outing looked eerily similar to the ones at the big league level last summer before the Giants sent Birdsong back to Triple-A. He started the first Cactus League game for the Giants but recorded just one out. After two seeing-eye singles and two walks, Birdsong watched a fastball leave the yard for a grand slam that gave the Seattle Mariners a 5-0 lead. IT'S GRAND SALAMI TIME pic.twitter.com/qldl0ksVtb — Seattle Mariners (@Mariners) February 21, 2026 But Birdsong found a huge positive in the short outing. His four-seamer, which topped out at 98 mph, was mostly thrown for...