CHICAGO -- Dioner Navarro's pinch-sacrifice fly drove in Anthony Rizzo and the Chicago Cubs beat the Pittsburgh Pirates 4-3 in 11 innings on Sunday.
Rizzo and Alfonso Soriano singled to start the 11th and advanced when Russell Martin's pickoff throw to second went into center field. Luis Valbuena was intentionally walked by Bryan Morris (4-3) before Navarro's fly to right.
With two outs in the ninth, Pittsburgh's Starling Marte hit a 3-2 pitch for a home run to tie the score at 3. Marte's homer was his ninth of the season and came off Cubs closer Kevin Gregg, who was one out from his 16th save in 17 tries.
Matt Guerrier (3-4) picked up the win, pitching two scoreless innings for the Cubs, who got seven innings of relief after Carlos Villanueva lasted four innings. Chicago won its fifth series in its last seven.
Scott Hairston, pinch-hitting for Pedro Strop, took a 2-1 pitch from Tony Watson and hit it into deep center field to give the Cubs a 3-2 lead with two outs in the seventh. The homer was Hairston's eighth of the year and his first as a pinch-hitter for the Cubs.
Burnett, who was activated off the disabled list after missing a month with a right calf strain, went five innings and allowed two runs (one earned) and three hits while striking out three in his first start since June 8 against the Cubs.
Burnett had previously dominated the Cubs, going 7-2 with a 3.08 ERA lifetime against them while compiling a 5-0 record and 2.91 ERA at Wrigley Field.
Pittsburgh dropped consecutive games for the first time since getting swept by the Atlanta Braves on June 3-5 and fell into a first-place tie in the National League Central with the St. Louis Cardinals.
Making his first start since May 14 after being dropped from the rotation to accommodate Matt Garza's return from the disabled list, Villanueva worked four innings, allowing one run and three hits while striking out five. Before the game, Cubs manager Dale Sveum said Villanueva would be limited to around 75 pitches and the right-hander's day ended at 69 before being replaced by Hector Rondon.
Villanueva, who also scored a run, was staked to an early lead.
The Cubs scored twice in the third to take a 2-0 lead. Chicago scored first with one out when Garrett Jones couldn't handle a Rizzo grounder, bringing in Villanueva after the pitcher led off with a single. Alfonso Soriano's sacrifice fly to center drove in Starlin Castro, who had doubled.
Soriano's RBI was his 14th in his last nine games.
Pittsburgh answered with a run in the fourth but squandered a chance for more, something that would repeat during the game. The Pirates left two runners on base in the fourth, fifth and sixth innings.
After Jose Tabata led off with a bloop double down the right-field line, Andrew McCutchen's sharp two-base hit to left-center brought in Tabata to cut the Cubs' lead in half.
The Pirates eventually moved runners to second and third, but on his 69th and final pitch, Villanueva got Brandon Inge to ground out to short.
Pittsburgh did tie the score in the fifth against Rondon. Marte reached on a fielder's choice and scored from first on Tabata's second double in two innings to pull the Pirates into a 2-2 tie. Rondon then struck out Jones with runners on first and second to end the threat.
NOTES: Pirates 2B Neil Walker was not in the Pittsburgh lineup, one day after coming out of the game with discomfort in his right side. Pittsburgh manager Clint Hurdle said Walker is day to day. ... Cubs OF Brian Bogusevic, who has a tight left hamstring, pinch-hit for Villanueva in the fourth and struck out swinging. ... To make room for Burnett, the Pirates optioned pitcher Ryan Reid to Triple-A Indianapolis. Reid has no record and a 1.64 ERA in seven games. ... Jeff Locke (8-1, 2.12 ERA) faces Oakland's Bartolo Colon (11-3, 2.78 ERA) in a matchup of pitching all-stars on Monday in Pittsburgh. Locke will be one of Pittsburgh's four representatives, and Colon was the only Oakland player chosen. ... Matt Garza (4-1, 3.45 ERA) faces the White Sox's Hector Santiago (3-5, 3.50 ERA) in a makeup game for the May 28 rainout.