Weeks is a first-time participant in the Derby, and manager Ron Roenicke has already asked the second baseman if the Derby would hurt his stroke. The manager was satisfied with what he heard from Weeks, who said he doesn't plan to tweak his swing.
"We do it all the time in BP, and it's just one of those things where, you know, you have to have confidence in yourself," Weeks said. "Some people have different swings, of course, and might have to create more lift or something like that, and that might mess them up, possibly."
Roenicke said that Weeks' unusual approach to batting practice, in which he chops grounders the first round and goes for power the next, allows him to "turn it on and off when he wants to."
Roenicke wasn't as concerned about Fielder, who won the Derby in 2009 and is second in the National League this season with 22 home runs.
"I swing hard kind of anyway, so I don't think it really affects my swing as much," Fielder said. "I might swing a little too hard, but it's not too far off from my regular swing, so it's not too big of a deal."
Asked if he's a believer in the Home Run Derby curse, Roenicke laughed before offering his answer.
"I don't know, and I don't want to know," Roenicke said.