The Diamondbacks' former All-Star went 0-for-5 and stranded four runners in scoring position in Arizona's 8-6 loss to the San Diego Padres on Wednesday night. He popped out to end the game and was booed mercilessly by the gathering, which had stuck around for the postgame fireworks.
"To be honest with you, I don't care anything what the fans think of me," Upton said. "My teammates, my coaches, they know I come here and I bust it every single day. I try to do everything I can to help this team. My teammates have my back and whatever the fans want to think, they can think. They can call me lazy. I have heard that in the outfield. They can call me washed up. Whatever they want to call me but at the end of the day I am thankful for every opportunity to come out on a baseball field and I will try my hardest every day."
Upton was batting .263 with seven home runs and 34 RBIs after Wednesday's game. He was 1-for-14 over the Diamondbacks' three-game sweep at the hands of the Padres, and is 4-for-27 (.148) at the plate over his last seven games.
Arizona's starting pitcher Ian Kennedy said the team knows how hard Upton is trying.
"He is a superstar player so maybe they expect that," Kennedy said. "J-Up expects that of himself. It is hard on him knowing that he is struggling in those situations. He was hitting pretty good on the last road trip and leading up to it. It was just as of late but he did really well last year so that might have something to do with it."