SAN FRANCISCO — For a self-professed simple guy who played the game with a no-frills attitude, Jeff Kent has been overcome with emotion many times this year. The hard-nosed, power-hitting former second baseman has had to stop mid-sentence, dab at his eyes and take a few halting breaths.The whole Cooperstown thing? It was too much at times. It’s made him think about the people who supported him and the insecurities he had to overcome while putting together a career the veterans committee deemed worthy of a place in the Hall of Fame. And Saturday afternoon, one month after that overwhelming induction weekend in upstate New York, he received the ultimate honor from the franchise he represents on his Hall of Fame plaque.The San Francisco Giants celebrated Kent between doubleheader games while retiring his No. 21. They flew in dignitaries and former teammates, including Barry Bonds, whose presence was eyebrow-raising for several reasons. Bonds hasn’t agreed to terms with the team on a new personal services contract. He hadn’t been to the ballpark in China Basin since he worked for Netflix on opening day. And although the Giants retired Bonds’ No. 25 in 2018, he has been denied his own place in Cooperstown and was passed over by the same body that elected Kent.Kent joined Bonds, Juan Marichal and Will Clark as the only living Giants to have their number retired. Marichal and Clark attended the ceremony. So Bonds’ absence would have been just as notable as his presence.It was Kent’s day, but his story in San Francisco cannot be told without Bonds, which both seemed to understand. So when Kent came to Bonds in the receiving line on the field, they turned a potentially awkward moment into a comical one. Bonds playfully grabbed Kent by both shoulders and shook him, reenacting their famous scuffle from the 2002 season when a disagreement turned physical in the dugout in San Diego.