ST. PETERSBURG, Fla. >> J.D. Martinez hit a tiebreaking, three-run homer in his return to the lineup and the Boston Red Sox backed Tanner Houck’s clutch relief effort with a franchise postseason record five home runs, beating the Tampa Bay Rays 14-6 today to even their AL Division Series at a game each.

Kiké Hernandez had five of Boston’s 20 hits, including a homer and three doubles, becoming Boston’s first player with four extra-base hits in a postseason game.

Xander Bogaerts, Alex Verdugo and Rafael Devers also connected for the Red Sox, who rallied for a blowout win after ace Chris Sale allowed a first-inning grand slam to Jordan Luplow and was pulled following just three outs.

Hernández’s leadoff homer in the fifth off Collin McHugh tied it before Martinez went deep against Matt Wisler four batters later.

Houck kept Boston in the game after Sale was rocked for five runs in the first inning. The rookie right-hander came out of the bullpen to start the second inning and allowed one run and two hits over five frames, retiring his first 11 batters before yielding a two-out single to Wander Franco in the fifth.

GIANTS 4, DODGERS 0

SAN FRANCISCO >> Logan Webb struck out 10 pitching masterfully in his postseason debut, Buster Posey hit a two-run homer that held up, and the 107-win San Francisco Giants blanked the defending World Series champion Los Angeles Dodgers 4-0 tonight in the opener of their NL Division Series.

Those two Giants standouts summed up this year perfectly for the NL West champs: A brilliant performance by the young right-hander supported by a veteran catcher who has shined on this big October stage so many times before.

Kris Bryant and Brandon Crawford also homered to back a combined five-hitter by Webb and a pair of relievers.

The Dodgers will try to even the series when they send 20-game winner Julio Urías to the mound for Game 2 on Saturday night opposite Giants All-Star right-hander Kevin Gausman.

Tyler Rogers relieved for the final out in the eighth and Camilo Doval worked the ninth.

ASTROS 9, WHITE SOX 4

HOUSTON >> Carlos Correa hit a two-run double during a five-run seventh inning and Houston beat Chicago for a 2-0 lead in their AL Division Series.

Kyle Tucker homered and drove in three runs as the Astros moved within one win of their fifth straight appearance in the AL Championship Series. Alex Bregman had two hits and scored twice, and Jose Altuve made a couple of big plays. Game 3 of the best-of-five series is Sunday night in Chicago.

The Astros grabbed the lead for good on Yordan Alvarez’s tiebreaking RBI single off Aaron Bummer with one out in the seventh. Craig Kimbrel then took over and retired Yuli Gurriel before Correa’s drive to right sailed just past a sprinting Leury García.

White Sox right-hander Lucas Giolito permitted four runs and three hits in 4 1/3 innings. He tied a season high with five walks in his second career playoff start.

BREWERS 2, BRAVES 1

MILWAUKEE >> Rowdy Tellez spoiled Charlie Morton’s gem with a two-run homer in the seventh inning and threw out a runner at home plate, leading Milwaukee over Atlanta in the opener of their NL Division Series.

Corbin Burnes, Adrian Houser and Josh Hader combined on a four-hitter that gave Milwaukee the early lead in this best-of-five series. Game 2 is Saturday in Milwaukee.

Former Brewer Orlando Arcia grounded to second with runners on the corners to end the game. That came after Brewers catcher Omar Narváez — who paired with first baseman Tellez on a key first-inning double play — blocked Hader’s 1-2 pitch in the dirt to keep Freddie Freeman at third base.

After Morton hit Avisaíl García with a 1-2 pitch to start the seventh, Tellez ripped another 1-2 offering from Morton over the center-field wall to break a scoreless tie. The hefty, bearded slugger had gone 1 of 13 against the Braves this season until delivering that 411-foot drive.