So far in his rookie year, Giants star Bryce Eldridge is beginning to blossom into the player San Francisco hopes he will become.The 21-year-old certainly has exceeded expectations during the 2026 MLB season, especially throughout his current 22-game on-base streak that stayed alive during the Giants’ 7-5 win Wednesday against the Atlanta Braves with his sixth home run of the year.Manager Tony Vitello praised not only Eldridge’s performance this season, but also what specifically is behind his high level of play.“I think it’s real confidence,” Vitello said Thursday on KNBR’s “Murph and Markus Show.” “There’s [no] trying to emulate other stars or trying to have any fake swagger. It’s just a sincere feeling and self-belief that he has going on, and [Eldridge is] incredibly mature.“I know I’ve said it over and over again, but [he’s] incredibly mature for any age, just as a person like you said. He’s got that confidence off the field, but on the field, you always want to get positive feedback.” “It’s real confidence… there’s no...