MIAMI — Brooks Conrad's second pinch-hit grand slam of the year put the Atlanta Braves ahead in an eight-run eighth inning, and they rallied past the Florida Marlins 10-5 Saturday night.

Six of the runs were unearned because of two errors by third baseman Jorge Cantu.

Nine of the first 10 batters reached, and the Braves scored against all three Florida pitchers — Taylor Tankersley, Jhan Marinez and Burke Badenhop.

Conrad's slam with one out put the Braves ahead 9-5. It was his fifth homer, and his third as a pinch-hitter. He hit a pinch-hit, walkoff slam to cap a seven-run ninth inning against Cincinnati on May 20.

Eight runs in an inning were a season high for Atlanta and the most allowed by Florida.

Atlanta's Martin Prado led off the game with his 13th home run. Justin Heyward went 3 for 3 with two walks and scored twice.

Dan Uggla homered and drove in three runs for the Marlins, and Mike Stanton also homered. Anibal Sanchez left ahead 5-2 after six innings, but the bullpen and Cantu couldn't protect the lead.

The collapse came with Florida on the verge of winning for the seventh time in eight games. When the inning ended, the Marlins drew jeers from the crowd of 30,245, their largest at home since May 1.

Manager Edwin Rodriguez was lucky not to have to watch from the dugout. He was ejected for the first time in his career in the fifth inning for arguing balls and strikes.

Atlanta is 4-33 when trailing after seven innings.

The Braves trailed 5-2 when Heyward led off the eighth with a single. Chipper Jones reached on a throwing error by Cantu, and Tankersley hit Brian McCann with a 71-mph curve to load the bases. Marinez (1-1) came on to walk Troy Glaus and force in a run, then gave up a tying two-run single to Eric Hinske.

Catcher Ronny Paulino fielded a bunt and threw to third for a forceout, but Cantu's foot missed the base, and the bases were loaded again. Following a forceout at the plate, Conrad hit a 2-1 pitch from Badenhop into the stands for a 9-5 lead.

The Braves added their final run on an RBI groundout by Jones.

Atlanta's Kris Medlen, starting for the first time since July 7, gave up seven hits and five runs in six innings. Jesse Chavez (2-1) pitched a perfect seventh.

Notes: Florida RHP Chris Volstad will be recalled from Triple-A New Orleans to rejoin the rotation, and he'll start Sunday. ... A 1-5-3 putout: The Marlins' Hanley Ramirez grounded off the foot of Chavez, and the ball deflected to 3B Jones, who threw to first. ... Miami Dolphins CB Vontae Davis threw out the first pitch.