Edwin Jackson wasn't happy about being pulled and he let Cubs manager Dale Sveum know it.After giving up just two runs on two hits through four innings, Jackson was surprised when he was pulled for a pinch hitter in the fifth inning of Chicago's 6-1 loss to the Milwaukee Brewers on Monday night.Television cameras caught Jackson and Sveum having words as Jackson headed down the tunnel toward the clubhouse. Several Cubs players and coaches moved toward the two as Jackson continued walking down the tunnel."I was just ready to go. As a pitcher, we're always just ready to go," Jackson said. "We got a lot of competitors on this team and we're ready to battle at all times. Everybody wants to stay in the game. I was ready to battle, but he made his decision."Jackson (8-16) said he had no hard feelings toward Sveum."I don't have any problem with him. I'm sure he don't have any problem with me," he said. "I was caught off guard a little bit, but it's the nature of the game. He's the manager. He can make the calls whenever he feels like he needs to."It's something that happened, but it's not really a big deal. It might be made more of a big deal than it really is."Sveum understood Jackson's frustration, but was trying to get the Cubs some runs."You respect that when players want to stay in the game, but I made that decision," the manager said. "As many one-run ball games as we've played - and in this ball park - I decided to take a shot at tying it back up and making sure we scored that one run."Cubs first baseman Anthony Rizzo said it was just two competitors getting into an argument."You don't want confrontation, especially in the dugout," he said. "You want that stuff to happen behind the scenes if it does happen at all. It could have been handled differently, but I know every pitcher, every player in this game is competitive."Caleb Gindl had three hits for the Brewers, including a two-run home run. The Brewers' fourth win in five games moved them 3 1/2 games above Chicago at the bottom of the NL Central."I never want to finish in last place," Brewers manager Ron Roenicke said. "We are still playing to win every game."Wily Peralta (10-15) pitched six strong innings and gave up an unearned run on five hits. He struck out seven and walked two.Roenicke was impressed that Peralta was able to keep Milwaukee in the game even though he didn't have his best stuff."He scuffled off and on, but he made good pitches when he needed to," Roenicke said. "It is really important that even when he doesn't have his best stuff that he can keep us in the game."The Brewers got their first hit off Jackson in the fourth inning when Scooter Gennett blooped a single to left field. Gindl followed with a triple off the center-field wall to score Gennett.Martin Maldonado dropped a sacrifice bunt to score Gindl and Jackson threw the ball past Rizzo at first, allowing Maldonado to take second. Jackson got Peralta to line out and struck out Norichika Aoki to get out of the inning.Chicago cut the lead to 2-1 in the fifth inning. Welington Castillo led off with a flyball down the right field line that Gennett got a glove on but couldn't catch. It was ruled a double, with Castillo taking third after Aoki's relay throw went over the head of shortstop Jean Segura. Castillo scored on Starlin Castro's single.Milwaukee extended the lead to 4-1 in the sixth inning on Yuniesky Betancourt's pinch-hit RBI single and Segura's RBI double.Gindl hit his fifth home run of the season in the seventh inning, a two-run shot that pushed the lead to 6-1.NOTES: Brewers 3B Aramis Ramirez returned to the starting lineup. He missed two games after being hit on the left wrist Friday by a pitch from Cincinnati's Mat Latos. ... Rookie LF Khris Davis missed his second straight start after reinjuring his left wrist Saturday against the Reds. ... Cubs 2B Darwin Barney entered the game leading NL second-baseman with a .993 fielding percentage. Golden Glove ballots were distributed this week.