Phillies center fielder Odubel Herrera was fined by manager Pete Mackanin for trying to steal a base over the weekend despite being given a red light.
"I understand the fine," Herrera said Tuesday. "I have to learn."
CSN Philly reported that the fine was several hundred dollars and would be donated to charity.
On Saturday night, Herrera was picked off first for the third out in the top of the sixth inning, with Philadelphia trailing theArizona Diamondbacks3-2 in Phoenix. Herrera came out of the game on a double switch in the bottom of the frame.
The Phillies went on to lose 9-2.
"I saw the sign," Herrera told reporters Tuesday. "I just took a chance because I saw the catcher's sign [for a breaking ball] and I thought I could make it. But the pitcher didn't throw to home, he threw to first."
Herrera acknowledged that he has made a series of mistakes recently.
"Not concentrating," he said. "A lack of concentration. Sometimes I use too much aggressiveness, you know? I have to slow down and be smarter and just learn from things."
The Phillies signed Herrera to a five-year, $30.5 million contract over the winter.
Herrera often has the green light to steal, but on several occasions recently, he has ignored his coaches' signals.
On Wednesday, he ran around third base coach Juan Samuel, who was giving him a stop sign, in an attempt to score the game-winning run. He was thrown out at the plate. On Thursday, he was picked off third base.
Though he has a 10-game hitting streak, Herrera was out of the starting lineup on Tuesday in Phillies' 8-2 win over theSeattle Mariners. He entered as a pinch hitter in the eight inning and he lined out to center field in his only at-bat.
"I still want to play hard, still want to be aggressive," Herrera said. "Sometimes you don't get the results that you are looking for."
Herrera said Mackanin told him he would be back in the lineup on Wednesday.