MILWAUKEE—Corey Hart calls Rickie Weeks the toughest player he’s ever met. Now, he and the rest of the Milwaukee Brewers must continue their playoff chase without their All-Star second baseman.Weeks will head to the 15-day disabled list with a sprained left ankle after being injured running out a throw to first in the Brewers’ 2-0 victory over the Cubs on Wednesday night. There’s no timetable yet on when he can return.Brewers owner Mark Attanasio said the ankle wasn’t broken, but Weeks went to the hospital for further tests to check for ligament damage.Prince Fielder hit his 23rd home run and Zack Greinke (8-4) worked effectively into the seventh inning as Milwaukee kept pace in the crowded NL Central, but losing Weeks will be a huge blow to the Brewers’ postseason chances.Fielder gave Milwaukee a 1-0 lead in the second and Weeks followed with a grounder to Cubs shortstop Starlin Castro. Castro hesitated and Weeks stretched out to beat the throw when his left foot slipped off the side of the bag and turned inward. Weeks was helped off the field by Roenicke and assistant trainer Dan Wright and did not put weight on the leg.General manager Doug Melvin had already been looking for middle infielders to help shore up depth, but this injury may hasten Milwaukee’s need to make a deal before Sunday’s non-waiver trade deadline.Weeks was hitting .272 with 19 homers and 43 RBI in 104 games in the first season of a $38.5 million, four-year deal.Weeks’ injury overshadowed the pitching duel that developed between Cubs starter Carlos Zambrano and Greinke as well as John Axford converting his franchise record 26th consecutive save. Zambrano, the subject of trade rumors himself, had been 7-0 with a 2.40 ERA in his previous eight starts at Miller Park, which included his no-hitter against the Astros when Houston was forced to relocate two games in 2008 due to Hurricane Ike. But Zambrano (7-6) left one pitch hanging to Fielder, who hit his first homer since his three-run shot for the National League in the All-Star game. Fielder had been slumping with only three extra-base hits in his previous 57 at-bats before the homer.After Craig Counsell replaced Weeks, Casey McGehee doubled and Yuniesky Betancourt hit a sacrifice fly to make it 2-0. After the game, Zambrano was mum about his future. “Everybody has to make change to win,” he said before walking away from reporters.Greinke struck out nine and left with two outs in the seventh after walking Blake DeWitt. Reliever Takashi Saito got Darwin Barney to ground out to end the inning. Francisco Rodriguez pitched the eighth, allowing a warning-track fly ball from Aramis Ramirez that would have tied the game if it had been hit about 3 feet farther. Axford worked a perfect ninth to end it and surpass Doug Jones’ 1997 mark of 25 consecutive saves for the Brewers.

NOTES—Axford has converted 29 of 31 save chances this year….Fielder is the only player in the majors to start every game this season after Florida’s Gaby Sanchez didn’t play against Washington on Tuesday night. Fielder has missed only one game over the last three seasons when he was ill….The Brewers sent C Wil Nieves to Atlanta for cash. The Braves will pick up the rest of what’s owed on Nieves’ $775,000, one-year contract.