CINCINNATI (AP) -- Yonder Alonso's second career grand slam pulled the Padres even in the seventh inning, and Matt Kemp singled with the bases loaded in the eighth on Saturday, completing San Diego's biggest comeback of the season for a 9-7 victory over the Cincinnati Reds.
San Diego won its sixth in a row against Cincinnati over the last two seasons, this one with a big day from the middle of the order.
Alonso's homer off Tony Cingrani tied it 7-7 and completed a comeback from a 6-1 deficit. San Diego loaded the bases in the eighth with Abraham Almonte's pinch-hit double and a pair of walks by Jumbo Diaz (2-1). Kemp's single through the hole at shortstop gave him five RBIs overall.
Kemp also had a solo homer and a two-run double off Michael Lorenzen.
Brandon Maurer (2-0) retired the three batters in the seventh. Craig Kimbrel gave up a walk and a single in the ninth before fanning Zack Cozart for his 13th save in 14 chances.
Todd Frazier drove in three runs with a pair of doubles for the Reds, who lost for the 14th time in 19 games.
The Reds got their big early lead with the help of several Padres misplays, followed by their biggest meltdown of the season.
Center fielder Will Venable broke in on Joey Votto's flyball with two outs in the fourth, allowing it to go over his head for an RBI triple. Frazier followed with another fly that Venable broke in on, only to have it go past him for a run-scoring double.
Cincinnati's bullpen helped the Padres pull it out by walking five batters in the seventh and eighth innings, with three of them scoring.
Ryan Mattheus fanned the first two batters in the seventh, then gave up an infield single and walked the next two. Cingrani came on and gave up the grand slam.
TRAINER'S ROOM
Padres: Outfielder Wil Myers headed out to start a rehab assignment. He's expected to play three games at Triple-A and could be activated off the disabled list if his left wrist is fine. He's been sidelined since May 11 with tendinitis.
Reds: Right fielder Jay Bruce ran into the outfield wall as he tried to catch Kemp's homer in the fourth inning. He wasn't hurt and stayed in the game.
UP NEXT
Padres: Odrisamer Despaigne (3-3) starts on an extra day of rest. He gave up one run in eight innings of a 7-1 victory over the Pirates last Sunday.
Reds: Johnny Cueto (3-4) makes his second start since returning from elbow inflammation. He gave up two runs in six innings of a 5-4 loss at Philadelphia on Tuesday.
